December 25, 2011

L2.APEWS.ORG False Positive #10

Just over a week since the last one, found this which is the tenth in as many weeks, not bad. We know that the email sent by the server was solicited as it was a response to a web purchase, i.e. server generated receipt;

Sat 2011-12-24 06:53:43: [916:2344] Accepting SMTP connection from [83.223.106.9]
Sat 2011-12-24 06:53:43: [916:2344] Looking up PTR record for 83.223.106.9 (9.106.223.83.IN-ADDR.ARPA)
Sat 2011-12-24 06:53:44: [916:2344] D=9.106.223.83.IN-ADDR.ARPA TTL=(1440) PTR=[fusion.bpweb.net]
Sat 2011-12-24 06:53:44: [916:2344] Gathering A-records for PTR hosts
Sat 2011-12-24 06:53:44: [916:2344] D=fusion.bpweb.net TTL=(120) A=[83.223.106.9]
Sat 2011-12-24 06:53:44: [916:2344] --> 220 xxx.xxx.xxx ESMTP MDaemon 6.7.9; Sun, 25 Dec 2011 06:53:44 -0500
Sat 2011-12-24 06:53:44: [916:2344] <-- EHLO fusion.bpweb.net
Sat 2011-12-24 06:53:44: [916:2344] Performing reverse lookup on fusion.bpweb.net (looking for 83.223.106.9)
Sat 2011-12-24 06:53:44: [916:2344] D=fusion.bpweb.net TTL=(120) A=[83.223.106.9]
Sat 2011-12-24 06:53:44: [916:2344] --> 250-xxx.xxx.xxx Hello fusion.bpweb.net, pleased to meet you
Sat 2011-12-24 06:53:44: [916:2344] --> 250-ETRN
Sat 2011-12-24 06:53:44: [916:2344] --> 250-AUTH=LOGIN
Sat 2011-12-24 06:53:44: [916:2344] --> 250-AUTH LOGIN CRAM-MD5
Sat 2011-12-24 06:53:44: [916:2344] --> 250-8BITMIME
Sat 2011-12-24 06:53:44: [916:2344] --> 250 SIZE 0
Sat 2011-12-24 06:53:45: [916:2344] <-- MAIL From: SIZE=112236
Sat 2011-12-24 06:53:45: [916:2344] Performing reverse lookup on londonmagicstore.co.uk (looking for 83.223.106.9)
Sat 2011-12-24 06:53:45: [916:2344] D=londonmagicstore.co.uk TTL=(119) A=[87.117.239.236]
Sat 2011-12-24 06:53:46: [916:2344] P=050 D=londonmagicstore.co.uk TTL=(120) MX=[aspmx3.googlemail.com] {74.125.127.27}
Sat 2011-12-24 06:53:46: [916:2344] P=040 D=londonmagicstore.co.uk TTL=(120) MX=[aspmx2.googlemail.com] {74.125.43.27}
Sat 2011-12-24 06:53:46: [916:2344] P=030 D=londonmagicstore.co.uk TTL=(120) MX=[alt2.aspmx.l.google.com]
Sat 2011-12-24 06:53:46: [916:2344] P=020 D=londonmagicstore.co.uk TTL=(120) MX=[alt1.aspmx.l.google.com]
Sat 2011-12-24 06:53:46: [916:2344] P=010 D=londonmagicstore.co.uk TTL=(120) MX=[aspmx.l.google.com]
Sat 2011-12-24 06:53:46: [916:2344] D=alt2.aspmx.l.google.com TTL=(4) A=[74.125.65.26]
Sat 2011-12-24 06:53:46: [916:2344] D=alt1.aspmx.l.google.com TTL=(4) A=[209.85.225.26]
Sat 2011-12-24 06:53:46: [916:2344] D=aspmx.l.google.com TTL=(4) A=[74.125.127.26]
Sat 2011-12-24 06:53:46: [916:2344] Spam Blocker A-record resolution of [9.106.223.83.L2.APEWS.ORG] in progress (DNS Server: 192.168.1.2)...
Sat 2011-12-24 06:53:46: [916:2344] Spam Blocker D=9.106.223.83.L2.APEWS.ORG TTL=(35) A=[127.0.0.2]
Sat 2011-12-24 06:53:46: [916:2344] L2.APEWS.ORG LISTED
Sat 2011-12-24 06:53:46: [916:2344] Message will be accepted and X-RBL-Warning: header will be inserted.
Sat 2011-12-24 06:53:46: [916:2344] --> 250 , Sender ok
Sat 2011-12-24 06:53:46: [916:2344] <-- RCPT To:
Sat 2011-12-24 06:53:46: [916:2344] --> 250 , Recipient ok
Sat 2011-12-24 06:53:47: [916:2344] <-- DATA
Sat 2011-12-24 06:53:47: [916:2344] --> 354 Enter mail, end with .
Sat 2011-12-24 06:53:49: [916:2344] --> 250 Ok, message saved
Sat 2011-12-24 06:53:49: [916:2344] <-- QUIT
Sat 2011-12-24 06:53:49: [916:2344] --> 221 See ya in cyberspace
Sat 2011-12-24 06:53:49: [916:2344] SMTP session successful, 113812 bytes transferred.
Sat 2011-12-24 06:53:49: [916:2344] Shuffling message(s) into proper queue(s)
Sat 2011-12-24 06:53:49: [916:2344] Message received from fusion.bpweb.net [83.223.106.9] with SMTP for [Size 113801] {j:\localq\md0000000.msg}

As before, we will report back if this gets de-listed.

December 24, 2011

Comparison of some DNSBL results

No false positives to report this week, great because email was up to nearly double with all the Xmas communications including contacts so nice that it went smoothly. Use the spare time to put some usage statistics together;

DNSBL

%

Errors

l2.apews.org

95

0.5%

b.barracudacentral.org

94

* uceprotect.net 1,2 & 3

91

<0.2%

zen.spamhaus.org

91

<0.1%

ip.v4bl.org

68

cbl.abuseat.org

68

<0.1%

spam.dnsbl.sorbs.net

65

dnsbl-2.uceprotect.net

63

<0.1%

dnsbl-3.uceprotect.net

63

<0.2%

hostkarma.junkemailfilter.com

62

bl.tiopan.com

61

dnsbl-1.uceprotect.net

51

<0.1%

bl.mailspike.net

45

ix.dnsbl.manitu.net

44

1.5

truncate.gbudb.net

43

bl.spameatingmonkey.net

38

blackholes.five-ten-sg.com

37

bl.spamcop.net

31

<0.1%

psbl.surriel.com

18

<0.1%

db.upbl.info

14

<0.1%

dnsbl.imps.de

8

no-more-funn.moensted.dk

7

<0.1%

bl.spamcannibal.org

3

spam.spamrats.com

2

<0.1%

* does not exist as a single dnsbl, use 3 lists


That accords with our findings too, very respectable error rates before the use of a whitelist. Only Barracuda's system comes close and they require a free registration before you can access their data. You can use a combined result from all 3 lists at UCEProtect.net to achieve similar results though they do have lower error rates.

There are websites that offer a one-stop lookup service, like dnsbl.info, where you can input an IP address and see which blacklists have it listed. In their case, dnsbl.info test 80+ blacklists but do not include l2.apews.org which seems odd when you see the results above. Yet they show the results from other blacklists with more than double the error rate, odd that.

December 19, 2011

Antihosts.exe trojan

Ended up having to fix a client computer over the weekend, Windows 7 with a failed Messenger and Windows Live problems. The trojan had replaced the "hosts" file and replaced it with this version;

191.164.12.1 zuleica
191.162.91.2 tarantula
19.251.32.13 ariranha
112.158.12.22 leandrino
132.168.7.42 zecurlano
121.91.41.151 cotidiano

121.15.12.137 www.banespa.com.br # GbPluguin
121.15.12.137 banespa.com.br # GbPluguin
121.15.12.137 www.santander.com.br # GbPluguin
121.15.12.137 santander.com.br # GbPluguin
121.15.12.137 caixa.com.br # GbPluguin
121.15.12.137 www.cef.gov.br # GbPluguin
121.15.12.137 cef.gov.br # GbPluguin
121.15.12.137 www.cef.com.br # GbPluguin
121.15.12.137 www.caixa.gov.br # GbPluguin
121.15.12.137 caixa.gov.br # GbPluguin
121.15.12.137 www.caixa.com.br # GbPluguin
209.94.172.28 live.com # GbPluguin
209.94.172.28 www.live.com # GbPluguin
209.94.172.28 www.msn.com # GbPluguin
121.15.12.137 cef.com.br # GbPluguin
121.15.12.137 internetbanking.caixa.gov.br # GbPluguin
121.15.12.137 internetbanking.caixa.com.br # GbPluguin
121.15.12.137 internetbanking.cef.gov.br # GbPluguin
121.15.12.137 internetbanking.cef.com.br # GbPluguin
121.15.12.137 www.e-gold.com.br # GbPluguin
121.15.12.137 e-gold.com.br # GbPluguin
121.15.12.137 www.e-gold.com # GbPluguin
121.15.12.137 e-gold.com # GbPluguin
121.15.12.137 www.bradescoprime.com.br # GbPluguin
121.15.12.137 www.cetelem.com.br # GbPluguin
121.15.12.137 cetelem.com.br # GbPluguin
121.15.12.137 www.cartaoaura.com.br # GbPluguin
209.94.172.28 msn.com # GbPluguin
209.94.172.28 www.msn.com.br # GbPluguin
209.94.172.28 login.live.com # GbPluguin
121.15.12.137 cartaoaura.com.br # GbPluguin
121.15.12.137 bradescoprime.com.br # GbPluguin
121.15.12.137 www.itaupersonnalite.com.br # GbPluguin
121.15.12.137 itaupersonnalite.com.br # GbPluguin
121.15.12.137 americanexpress.com.br # GbPluguin
121.15.12.137 www.sicredi.com.br # GbPluguin
121.15.12.137 sicredi.com.br # GbPluguin
121.15.12.137 portal.sicredi.com.br # GbPluguin
121.15.12.137 www.realsecureweb.com.br # GbPluguin
121.15.12.137 realsecureweb.com.br # GbPluguin
209.94.172.28 www.hotmail.com # GbPluguin
209.94.172.28 hotmail.com # GbPluguin
121.15.12.137 www.americanexpress.com.br # GbPluguin
121.15.12.137 www.americanexpress.com # GbPluguin
121.15.12.137 www.real.com.br # GbPluguin
121.15.12.137 www.bancoreal.com.br # GbPluguin
121.15.12.137 real.com.br # GbPluguin
121.15.12.137 bancoreal.com.br # GbPluguin
209.94.172.28 www.hotmail.com.br # GbPluguin
209.94.172.28 hotmail.com.br # GbPluguin
121.15.12.137 itau.com.br # GbPluguin
121.15.12.137 www.itau.com # GbPluguin
121.15.12.137 itau.com # GbPluguin
121.15.12.137 imagem.caixa.gov.br # GbPluguin
121.15.12.137 imagem.caixa.com.br # GbPluguin
121.15.12.137 imagem.cef.gov.br # GbPluguin
121.15.12.137 imagem.cef.com.br # GbPluguin
121.15.12.137 www.bradesco.com.br # GbPluguin
121.15.12.137 bradesco.com.br # GbPluguin
121.15.12.137 www.bradesco.com # GbPluguin
121.15.12.137 bradesco.com # GbPluguin
121.15.12.137 www.itau.com.br # GbPluguin
121.15.12.137 www.realsecureweb.com.br # GbPluguin
121.15.12.137 santanderempresarial.com.br # GbPluguin
121.15.12.137 www.santanderempresarial.com.br # GbPluguin
121.15.12.137 santanderempresarial.com # GbPluguin
121.15.12.137 www.santanderempresarial.com # GbPluguin
121.15.12.137 www.citibank.com.br # GbPluguin
121.15.12.137 citibank.com.br # GbPluguin
121.15.12.137 www.citibank.com # GbPluguin
121.15.12.137 citibank.com # GbPluguin

32.19.12.1 ezekien.lorena
22.93.11.98 marcos.gladiador
11.12.44.1 zumbi.palmares
81.55.12.4 arthur.erculando

Interesting that some USA Department Of Defense IP addresses are referred to as is a Ford Motor Company one too. The others are in South Korea, France, Australia and China. The trojan is capturing user names and passwords for the above mentioned banks etc.

The infection arrived in a spam email from a known-to-the-user Hotmail email address, probably a compromised account, with a link to a video about pedofilia. Clicking the link caused the trojan to install and make various changes including the above hosts file replacement.

Spammers ignore 550 command

Having written about the effectiveness for blocking, we have a spammer that is still trying to send emails to the same email address, on a different server and after a failed previous attempt where a 550 no suvh user was given;

Sat 2011-12-17 05:43:06: [468:256] Accepting SMTP connection from [67.159.33.100]
Sat 2011-12-17 05:43:06: [468:256] Looking up PTR record for 67.159.33.100 (100.33.159.67.IN-ADDR.ARPA)
Sat 2011-12-17 05:43:21: [468:256] The name server reports that it is having technical problems.
Sat 2011-12-17 05:43:21: [468:256] --> 220 xxx1.xxx.xxx ESMTP MDaemon 6.7.9; Sat, 17 Dec 2011 04:43:21 -0500
Sat 2011-12-17 05:43:21: [468:256] <-- EHLO super.jbcapacitacionempresarial.com
Sat 2011-12-17 05:43:21: [468:256] Performing reverse lookup on super.jbcapacitacionempresarial.com (looking for 67.159.33.100)
Sat 2011-12-17 05:43:22: [468:256] D=super.jbcapacitacionempresarial.com TTL=(240) A=[67.159.33.100]
Sat 2011-12-17 05:43:22: [468:256] --> 250-xxx1.xxx.xxx Hello super.jbcapacitacionempresarial.com, pleased to meet you
Sat 2011-12-17 05:43:22: [468:256] --> 250-ETRN
Sat 2011-12-17 05:43:22: [468:256] --> 250-AUTH=LOGIN
Sat 2011-12-17 05:43:22: [468:256] --> 250-AUTH LOGIN CRAM-MD5
Sat 2011-12-17 05:43:22: [468:256] --> 250-8BITMIME
Sat 2011-12-17 05:43:22: [468:256] --> 250 SIZE 0
Sat 2011-12-17 05:43:22: [468:256] <-- MAIL FROM: SIZE=48915
Sat 2011-12-17 05:43:22: [468:256] Performing reverse lookup on jbcapacitacionempresarial.com (looking for 67.159.33.100)
Sat 2011-12-17 05:43:22: [468:256] D=jbcapacitacionempresarial.com TTL=(240) A=[67.159.33.101]
Sat 2011-12-17 05:43:22: [468:256] P=010 D=jbcapacitacionempresarial.com TTL=(240) MX=[mail.jbcapacitacionempresarial.com] {67.159.33.101}
Sat 2011-12-17 05:43:22: [468:256] Spam Blocker A-record resolution of [100.33.159.67.L2.APEWS.ORG] in progress (DNS Server: 192.168.1.3)...
Sat 2011-12-17 05:43:22: [468:256] Spam Blocker D=100.33.159.67.L2.APEWS.ORG TTL=(35) A=[127.0.0.2]
Sat 2011-12-17 05:43:22: [468:256] L2.APEWS.ORG LISTED
Sat 2011-12-17 05:43:22: [468:256] --> 250 , Sender ok
Sat 2011-12-17 05:43:22: [468:256] <-- RCPT TO:
Sat 2011-12-17 05:43:22: [468:256] 'Recipient unknown' given to divert future spam
Sat 2011-12-17 05:43:22: [468:256] --> 550 , Recipient unknown
Sat 2011-12-17 05:43:23: [468:256] <-- QUIT
Sat 2011-12-17 05:43:23: [468:256] --> 221 See ya in cyberspace
Sat 2011-12-17 05:43:23: [468:256] SMTP session successful, 154 bytes transferred.

December 13, 2011

L2.APEWS.ORG False Positive #9

For those that are receiving the newsletters from the folks doing the dolphin watch documentary etc, Ocean Preservation Society, this latest false positive would have been serious. OPS have used CreateSend.com for their newsletter and the subscriber user on our network found it in the spam folder. Shame, lets hope that like with the previous ones, putting it here gets the server IP delisted;

Sat 2011-12-10 15:07:33: [968:7309] Accepting SMTP connection from [184.106.86.136]
Sat 2011-12-10 15:07:33: [968:7309] Looking up PTR record for 184.106.86.136 (136.86.106.184.IN-ADDR.ARPA)
Sat 2011-12-10 15:07:33: [968:7309] D=136.86.106.184.IN-ADDR.ARPA TTL=(5) PTR=[mr136.createsend.com]
Sat 2011-12-10 15:07:33: [968:7309] Gathering A-records for PTR hosts
Sat 2011-12-10 15:07:33: [968:7309] D=mr136.createsend.com TTL=(120) A=[184.106.86.136]
Sat 2011-12-10 15:07:33: [968:7309] --> 220 xxx.xxx.xxx ESMTP MDaemon 6.7.9; Sat, 10 Dec 2011 15:07:33 -0500
Sat 2011-12-10 15:07:33: [968:7309] <-- EHLO mr136.createsend.com
Sat 2011-12-10 15:07:33: [968:7309] Performing reverse lookup on mr136.createsend.com (looking for 184.106.86.136)
Sat 2011-12-10 15:07:33: [968:7309] D=mr136.createsend.com TTL=(119) A=[184.106.86.136]
Sat 2011-12-10 15:07:33: [968:7309] --> 250-xxx.xxx.xxx Hello mr136.createsend.com, pleased to meet you
Sat 2011-12-10 15:07:33: [968:7309] --> 250-ETRN
Sat 2011-12-10 15:07:33: [968:7309] --> 250-AUTH=LOGIN
Sat 2011-12-10 15:07:33: [968:7309] --> 250-AUTH LOGIN CRAM-MD5
Sat 2011-12-10 15:07:33: [968:7309] --> 250-8BITMIME
Sat 2011-12-10 15:07:33: [968:7309] --> 250 SIZE 0
Sat 2011-12-10 15:07:33: [968:7309] <-- MAIL FROM: BODY=8BITMIME
Sat 2011-12-10 15:07:33: [968:7309] Performing reverse lookup on createsend3.com (looking for 184.106.86.136)
Sat 2011-12-10 15:07:33: [968:7309] D=createsend3.com TTL=(720) A=[27.126.145.32]
Sat 2011-12-10 15:07:33: [968:7309] P=010 D=createsend3.com TTL=(240) MX=[mx1.createsend3.com] {27.126.144.2}
Sat 2011-12-10 15:07:33: [968:7309] Spam Blocker A-record resolution of [136.86.106.184.l2.apews.org] in progress (DNS Server: 192.168.1.2)...
Sat 2011-12-10 15:07:33: [968:7309] Spam Blocker D=136.86.106.184.l2.apews.org TTL=(35) A=[127.0.0.2]
Sat 2011-12-10 15:07:33: [968:7309] APEWS listed, 99.7% certain it is spam
Sat 2011-12-10 15:07:33: [968:7309] Message will be accepted and X-RBL-Warning: header will be inserted.
Sat 2011-12-10 15:07:33: [968:7309] --> 250 , Sender ok
Sat 2011-12-10 15:07:33: [968:7309] <-- RCPT TO:
Sat 2011-12-10 15:07:33: [968:7309] --> 250 , Recipient ok
Sat 2011-12-10 15:07:33: [968:7309] <-- DATA
Sat 2011-12-10 15:07:33: [968:7309] --> 354 Enter mail, end with .
Sat 2011-12-10 15:07:33: [968:7309] --> 250 Ok, message saved
Sat 2011-12-10 15:07:33: [968:7309] <-- QUIT
Sat 2011-12-10 15:07:33: [968:7309] --> 221 See ya in cyberspace
Sat 2011-12-10 15:07:33: [968:7309] SMTP session successful, 26599 bytes transferred.
Sat 2011-12-10 15:07:33: [968:7309] Shuffling message(s) into proper queue(s)
Sat 2011-12-10 15:07:33: [968:7309] Message received from mr136.createsend.com [184.106.86.136] with SMTP for [Size 26584] {j:\localq\md00000000.msg}

December 10, 2011

Whois utility SamSpade

Do you often get IP addresses connecting to your email server and you wonder who the **** is that? The answer is that there is a "Whois" of that information, and for Windows users there is a small well-written program that is very helpful. A visit to SamSpage.org shows "back soon" but the program can still be found for download at;

http://majorgeeks.com/Sam_Spade_d594.html

At just over a Mb it certainly isn't bloated with anything! Once installed it can be opened to reveal a simpe gray window. Put the unknown IP address in the top left box, for this example we will use the spammer just referred to, at 67.159.33.100;

The main registers for IP address ranges are;
ARIN, North American continent
RIPE, European continent and Middle East
LACNIC, Central and South America
APNIC, Asia, Pacific, Far East and Oceana
AFRINIC, Africa

Top center of SamSpade you will see a choice box, select whois.arin.net and then look to the left, down a little you will see an icon for "whois". Click on that and you get the following in your SamSpade window;

NetRange: 67.159.0.0 - 67.159.63.255
CIDR: 67.159.0.0/18
OriginAS:
NetName: FDCSERVERS
NetHandle: NET-67-159-0-0-1
Parent: NET-67-0-0-0-0
NetType: Direct Allocation
RegDate: 2004-10-12
Updated: 2006-12-27

OrgName: FDCservers.net
OrgId: FDCSE
Address: 141 w jackson blvd.
Address: suite #1135
City: Chicago
StateProv: IL
PostalCode: 60604
Country: US
RegDate: 2003-05-20
Updated: 2011-03-28

In our experience FDCServers do not have a good reputation and quite often have their IP addresses listed in the top 100 spam senders at any one time. Probably not too caring about the spam problem.

Another test that you can perform is from the top toolbar, the button called "Basics". Click on that and second one down on the list is NSLOOKUP, a test for finding the DNS name recorded for the IP address or domain name. For 67.159.33.100 we get the following result;

"nslookup 67.159.33.100
No reverse DNS (WSANO_DATA)"

Very impressive, there isn't one. FDCServers have an IP address pumping out emails with no reverse DNS set. The spammer therefore can set the HELO/EHLO server name to what ever he likes and change it whenever he likes. FDC should write the server name in their DNS and setup the PTR record so that it accords with the A record, therefore permitting real-time reverse DNS (rDNS) tests to succeed. You will note that our email server timed out trying to get that IP address DNS record. Failing to do so is open to abuse as we have seen, yet it is so easy to do, it literally takes 5 minutes to edit the DNS and only needs doing once.

Email servers can send emails for and on behalf of numerous domain names and this does not affect the name of the server in DNS, it's reverse DNS record or the HELO/EHLO used.

To get another opinion about IP addresses, networks, network providerss and server hosting businesses, try the following;

http://www.senderbase.org/

Over on the right of the home page you will see a box for "reputation lookup", insert 67.159.33.100 and click the button underneath. The window shows results for the IP address and associated email senders of the same domain name and IP addresses (in this case 67.159.33.0/24). Note the results;

67.159.33.33 is shown as "neutral" written in black text
67.159.33.100 is shown as "neutral" written in black text
67.159.33.101 is shown as "good" written in green text but
67.159.33.100 is shown as "poor" written in red text

Now change the address block to be /18 as the Whois tells us, FDCServers have an IP address block of that size, click "Go";

At the time of writing there are nearly 400 detected email senders from that /18 IP block and there is a lot of red! This second opinion of FDC agrees with our own experience.

Top center of the SenderBase.org web page is a button called "Top Senders", choose "Top Spam Senders" to see a recent report and the same old names.

L2.APEWS.ORG for blocking works great

We've seen a lot of comments on the internet, especially in Usenet net-abuse newsgroups, that Apews.org has no users, false positives are huge and that it is unfit for outright blocking. Alterior motives? Who are these people and why aren't they in here filling up the pages with their tons of test results?

We have been showing all the false positives that we receive on some commercial email servers that receive global email flows. The average FP rate is going to be about one, yes one, email per week! None of them were critical, more inconvenient than anything and in a couple of cases, they were possible FP only that were actually correct in identifying spam.

Are email server Administrators so lazy or incapable that they can't sort out one email a week for a user? And why can't they run a whitelist, I mean, no sane email Administrator would run an email server without one, right?

Here is evidence of a spammer having delivery denied, and you are going to ask how do I know it was spam if delivery was denied? Well, we have setup secondary and tertiary MX servers operating the exact same configuration as the primary servers but with blocking in place, not insert an X-Header for listed IP addresses of senders. The spammer delivered a copy of the same spam to an alternate server and was blocked from delivering on another server, so in that way we were able to see and check the spam to confirm.

Sat 2011-12-10 4:29:07: [1234:787] Accepting SMTP connection from [67.159.33.100]
Sat 2011-12-10 4:29:07: [1234:787] Looking up PTR record for 67.159.33.100 (100.33.159.67.IN-ADDR.ARPA)
Sat 2011-12-10 4:29:07: [1234:787] 3 second wait for DNS response exceeded
Sat 2011-12-10 4:29:07: [1234:787] --> 220 xxx.xxx.xxx ESMTP MDaemon 6.7.9; Sat, 10 Dec 2011 4:29:07 -0200
Sat 2011-12-10 4:29:07: [1234:787] <-- EHLO super.jbcapacitacionempresarial.com
Sat 2011-12-10 4:29:07: [1234:787] Performing reverse lookup on super.jbcapacitacionempresarial.com (looking for 67.159.33.100)
Sat 2011-12-10 4:29:07: [1234:787] D=super.jbcapacitacionempresarial.com TTL=(240) A=[67.159.33.100]
Sat 2011-12-10 4:29:07: [1234:787] --> 250-xxx.xxx.xxx Hello super.jbcapacitacionempresarial.com, pleased to meet you
Sat 2011-12-10 4:29:07: [1234:787] --> 250-ETRN
Sat 2011-12-10 4:29:07: [1234:787] --> 250-AUTH=LOGIN
Sat 2011-12-10 4:29:07: [1234:787] --> 250-AUTH LOGIN CRAM-MD5
Sat 2011-12-10 4:29:07: [1234:787] --> 250-8BITMIME
Sat 2011-12-10 4:29:07: [1234:787] --> 250 SIZE 0
Sat 2011-12-10 4:29:07: [1234:787] <-- MAIL FROM: SIZE=38288
Sat 2011-12-10 4:29:07: [1234:787] Performing reverse lookup on jbcapacitacionempresarial.com (looking for 67.159.33.100)
Sat 2011-12-10 4:29:07: [1234:787] D=jbcapacitacionempresarial.com TTL=(240) A=[67.159.33.101]
Sat 2011-12-10 4:29:07: [1234:787] P=010 D=jbcapacitacionempresarial.com TTL=(240) MX=[mail.jbcapacitacionempresarial.com] {67.159.33.101}
Sat 2011-12-10 4:29:07: [1234:787] Spam Blocker A-record resolution of [100.33.159.67.l2.apews.org] in progress (DNS Server: 192.168.1.1)...
Sat 2011-12-10 4:29:07: [1234:787] Spam Blocker D=100.33.159.67.l2.apews.org TTL=(35) A=[127.0.0.2]
Sat 2011-12-10 4:29:07: [1234:787] APEWS.ORG listed, 99.7% certain it is spam
Sat 2011-12-10 4:29:07: [1234:787] --> 250 , Sender ok
Sat 2011-12-10 4:29:07: [1234:787] <-- RCPT TO:
Sat 2011-12-10 4:29:07: [1234:787] 'Recipient unknown' given to divert future spam
Sat 2011-12-10 4:29:07: [1234:787] --> 550 , Recipient unknown
Sat 2011-12-10 4:29:07: [1234:787] <-- QUIT
Sat 2011-12-10 4:29:07: [1234:787] --> 221 See ya in cyberspace
Sat 2011-12-10 4:29:07: [1234:787] SMTP session successful, 154 bytes transferred.

The spammer was given a "550" user unknown reply and that should get the email address removed from the sender's database however, these days 550 get ignored and spammers keep trying to deliver to all email servers that they can get access to.

Email servers that send solicited emails do so by checking their cache or public DNS to find where to deliver an email. They try the first MX listed and only try the second or third if delivery was not possible and the retry period exhausted depending on the configuration chosen by the email Administrator of that server. Outbound email servers are typically not listed in DNS as MX i.e. senders and so even though they listen on TCP port 25, they should never receive emails.

Even domain delivery receipts and recipient display or read receipts use the same MX servers in the order of priority MX1, MX2, MX3 etc as configured in DNS by the Administrator for each domain name. Spammers ignore that and just send to all and any servers listening on TCP port 25. L2.Apews.org is therefore excellent for use in blocking and denying delivery on such servers if not other MX servers depending on the ability of the email Administrator.

Look again at the false positives that we have listed here, had we been blocking from day 1 then each of these would not have been allowed delivery into the network. See anything mission critical there? With a decent whitelist those FP would have been even fewer or zero. Why pay for a spam solution? Surely anyone making money out of spam solutions is part of the problem, they wouldn't want to give up their income. Needless to say, good email Administrators are worth their weight in gold, better to pay them than pay for anti-spam services or "solutions".

L2.APEWS.ORG False Positive #8

This one refers back to L2.APEWS.ORG False Positive #4, if you recall the MTV newsletter was found by our user in his spam folder. Having published that here and checking the IP address a day or two later, it was found to be delisted, so then why is another MTV newsletter again in the spam folder? Well, the MTV newsletter didn't come from the same IP address which means that Apews.org had more than one IP address listed in the previous listing. Here is the false positive;

Thu 2011-12-08 08:10:27: [1112:6566] Accepting SMTP connection from [129.228.5.20]
Thu 2011-12-08 08:10:27: [1112:6566] --> 220 xxx.xxx.xxx ESMTP MDaemon 6.7.9; Thu, 08 Dec 2011 08:10:27 -0500
Thu 2011-12-08 08:10:27: [1112:6566] <-- EHLO mtv-newsletter1.mms.mtv.com
Thu 2011-12-08 08:10:27: [1112:6566] --> 250-xxx.xxx.xxx Hello mtv-newsletter1.mms.mtv.com, pleased to meet you
Thu 2011-12-08 08:10:27: [1112:6566] --> 250-ETRN
Thu 2011-12-08 08:10:27: [1112:6566] --> 250-AUTH=LOGIN
Thu 2011-12-08 08:10:27: [1112:6566] --> 250-AUTH LOGIN CRAM-MD5
Thu 2011-12-08 08:10:27: [1112:6566] --> 250-8BITMIME
Thu 2011-12-08 08:10:27: [1112:6566] --> 250 SIZE 0
Thu 2011-12-08 08:10:27: [1112:6566] <-- MAIL FROM:
Thu 2011-12-08 08:10:27: [1112:6566] Spam Blocker A-record resolution of [20.5.228.129.l2.apews.org] in progress (DNS Server: 192.168.1.2)...
Thu 2011-12-08 08:10:27: [1112:6566] Spam Blocker D=20.5.228.129.l2.apews.org TTL=(35) A=[127.0.0.2]
Thu 2011-12-08 08:10:27: [1112:6566] APEWS listed, 99.7% certain it is spam
Thu 2011-12-08 08:10:27: [1112:6566] Message will be accepted and X-RBL-Warning: header will be inserted.
Thu 2011-12-08 08:10:27: [1112:6566] --> 250 , Sender ok
Thu 2011-12-08 08:10:27: [1112:6566] <-- RCPT TO:
Thu 2011-12-08 08:10:27: [1112:6566] --> 250 , Recipient ok
Thu 2011-12-08 08:10:27: [1112:6566] <-- DATA
Thu 2011-12-08 08:10:27: [1112:6566] --> 354 Enter mail, end with .
Thu 2011-12-08 08:10:28: [1112:6566] --> 250 Ok, message saved
Thu 2011-12-08 08:10:28: [1112:6566] <-- QUIT
Thu 2011-12-08 08:10:28: [1112:6566] --> 221 See ya in cyberspace
Thu 2011-12-08 08:10:28: [1112:6566] SMTP session successful, 20649 bytes transferred.
Thu 2011-12-08 08:10:28: [1112:6566] Shuffling message(s) into proper queue(s)
Thu 2011-12-08 08:10:28: [1112:6566] Message received from mtv-newsletter1.mms.mtv.com [129.228.5.20] with SMTP for [Size 20634] {j:\localq\md00000.msg}

After some further checking, it turns out that MTV have 4 consecutive IP addresses in Viacom address space, namely 129.228.5.20-129.228.5.23 so you might want to whitelist those. We have never had any problem with the MTV servers, check e.g. whitelist DNSWL.org for other trustworthy IP addresses in the same neighborhood as those.

At the time of writing this, none of those 4 IP addresses are showing as listed so it seems that Apews.org have corrected the MTV newsletter issue.

December 8, 2011

L2.APEWS.ORG False Positive #7

This is another example of a possible false positive because it will depend on your client base and email flow.

Wed 2011-12-07 03:59:15: [1144:6063] Accepting SMTP connection from [61.135.132.132]
Wed 2011-12-07 03:59:15: [1144:6063] Looking up PTR record for 61.135.132.132 (132.132.135.61.IN-ADDR.ARPA)
Wed 2011-12-07 03:59:17: [1144:6063] D=132.132.135.61.IN-ADDR.ARPA TTL=(59) PTR=[websmtp.sohu.com]
Wed 2011-12-07 03:59:17: [1144:6063] Gathering A-records for PTR hosts
Wed 2011-12-07 03:59:18: [1144:6063] D=websmtp.sohu.com TTL=(10) A=[61.135.132.204]
Wed 2011-12-07 03:59:18: [1144:6063] --> 220 xxx.xxx.xxx ESMTP MDaemon 6.7.9; Wed, 07 Dec 2011 03:59:18 -0500
Wed 2011-12-07 03:59:18: [1144:6063] <-- EHLO websmtp.sohu.com
Wed 2011-12-07 03:59:18: [1144:6063] Performing reverse lookup on websmtp.sohu.com (looking for 61.135.132.132)
Wed 2011-12-07 03:59:18: [1144:6063] D=websmtp.sohu.com TTL=(9) A=[61.135.132.204]
Wed 2011-12-07 03:59:18: [1144:6063] --> 250-xxx.xxx.xxx Hello websmtp.sohu.com (may be forged), pleased to meet you
Wed 2011-12-07 03:59:18: [1144:6063] --> 250-ETRN
Wed 2011-12-07 03:59:18: [1144:6063] --> 250-AUTH=LOGIN
Wed 2011-12-07 03:59:18: [1144:6063] --> 250-AUTH LOGIN CRAM-MD5
Wed 2011-12-07 03:59:18: [1144:6063] --> 250-8BITMIME
Wed 2011-12-07 03:59:18: [1144:6063] --> 250 SIZE 0
Wed 2011-12-07 03:59:20: [1144:6063] <-- MAIL FROM: SIZE=574602
Wed 2011-12-07 03:59:20: [1144:6063] Performing reverse lookup on sohu.com (looking for 61.135.132.132)
Wed 2011-12-07 03:59:20: [1144:6063] D=sohu.com TTL=(10) A=[61.135.181.175]
Wed 2011-12-07 03:59:20: [1144:6063] P=010 D=sohu.com TTL=(10) MX=[sohumx.h.a.sohu.com]
Wed 2011-12-07 03:59:20: [1144:6063] P=005 D=sohu.com TTL=(10) MX=[sohumx1.sohu.com] {61.135.132.110}
Wed 2011-12-07 03:59:21: [1144:6063] D=sohumx.h.a.sohu.com TTL=(5) A=[61.135.132.110]
Wed 2011-12-07 03:59:21: [1144:6063] Spam Blocker A-record resolution of [132.132.135.61.l2.apews.org] in progress (DNS Server: 192.168.1.2)...
Wed 2011-12-07 03:59:21: [1144:6063] Spam Blocker D=132.132.135.61.l2.apews.org TTL=(35) A=[127.0.0.2]
Wed 2011-12-07 03:59:21: [1144:6063] APEWS listed, 99.7% certain it is spam
Wed 2011-12-07 03:59:21: [1144:6063] Message will be accepted and X-RBL-Warning: header will be inserted.
Wed 2011-12-07 03:59:21: [1144:6063] --> 250 , Sender ok
Wed 2011-12-07 03:59:22: [1144:6063] <-- RCPT TO:
Wed 2011-12-07 03:59:22: [1144:6063] Can't accept or relay message.
Wed 2011-12-07 03:59:22: [1144:6063] Sender not authenticated or from trusted domain/IP and recipient not a valid local account.
Wed 2011-12-07 03:59:22: [1144:6063] --> 550 , Recipient unknown
Wed 2011-12-07 03:59:22: [1144:6063] <-- RSET
Wed 2011-12-07 03:59:22: [1144:6063] --> 250 RSET? Well, ok.
Wed 2011-12-07 03:59:23: [1144:6063] <-- QUIT
Wed 2011-12-07 03:59:23: [1144:6063] --> 221 See ya in cyberspace
Wed 2011-12-07 03:59:23: [1144:6063] SMTP session successful, 126 bytes transferred.

In this case the sender is a spammer that is using the free webmail service to send crap. The email address that the spammer tried to send to was stolen from a web page that no human being would see. That is what happens spammers use automated software called robots to routinely scan IP addresses for web servers hosting web pages that contain email addresses and scraping them into their databases.

You have decide for yourself on the ratio of spam versus solicited emails via the Sohu servers. Your server, your rules. Looking at the Apews.org website, this is the text that they show for the Sohu IP address;

Entry matching your Query: E-492519
61.135.132.204 CASE: C-1
Compromised or insecure MTA
Criminal abusers have user access
SysAdmin not closing abusive accounts
No or inadequate outbound mail filter
Special Reason: List washing dirty email address database
History: Entry created 2011-09-29

So it seems they are still doing the same more than 2 months after Apews recorded their entry.

December 1, 2011

L2.APEWS.ORG False Positive #6

This is another possible false positive, as with #5 it depends on your email flow, user requirements etc. Not everyone has the same geographic distribution of email senders, however, let us take a look;

Wed 2011-11-30 22:47:41: [948:3883] Accepting SMTP connection from [121.101.151.212]
Wed 2011-11-30 22:47:41: [948:3883] Looking up PTR record for 121.101.151.212 (212.151.101.121.IN-ADDR.ARPA)
Wed 2011-11-30 22:47:42: [948:3883] D=212.151.101.121.IN-ADDR.ARPA TTL=(29) PTR=[nm3-vm0.bullet.mail.in.yahoo.com]
Wed 2011-11-30 22:47:42: [948:3883] Gathering A-records for PTR hosts
Wed 2011-11-30 22:47:42: [948:3883] D=nm3-vm0.bullet.mail.in.yahoo.com TTL=(30) A=[121.101.151.212]
Wed 2011-11-30 22:47:42: [948:3883] --> 220 xxx.xxx.xxx ESMTP MDaemon 6.7.9; Wed, 30 Nov 2011 22:47:42 -0500
Wed 2011-11-30 22:47:42: [948:3883] <-- HELO nm3-vm0.bullet.mail.in.yahoo.com
Wed 2011-11-30 22:47:42: [948:3883] Performing reverse lookup on nm3-vm0.bullet.mail.in.yahoo.com (looking for 121.101.151.212)
Wed 2011-11-30 22:47:42: [948:3883] D=nm3-vm0.bullet.mail.in.yahoo.com TTL=(30) A=[121.101.151.212]
Wed 2011-11-30 22:47:42: [948:3883] --> 250 xxx.xxx.xxx Hello nm3-vm0.bullet.mail.in.yahoo.com, pleased to meet you
Wed 2011-11-30 22:47:42: [948:3883] <-- MAIL FROM:
Wed 2011-11-30 22:47:42: [948:3883] Performing reverse lookup on yahoo.com (looking for 121.101.151.212)
Wed 2011-11-30 22:47:43: [948:3883] D=yahoo.com TTL=(60) A=[72.30.2.43]
Wed 2011-11-30 22:47:43: [948:3883] P=001 D=yahoo.com TTL=(30) MX=[mta7.am0.yahoodns.net] {98.139.175.225}
Wed 2011-11-30 22:47:43: [948:3883] P=001 D=yahoo.com TTL=(30) MX=[mta6.am0.yahoodns.net] {74.6.136.244}
Wed 2011-11-30 22:47:43: [948:3883] P=001 D=yahoo.com TTL=(30) MX=[mta5.am0.yahoodns.net] {66.94.237.139}
Wed 2011-11-30 22:47:43: [948:3883] Spam Blocker A-record resolution of [212.151.101.121.l2.apews.org] in progress (DNS Server: 192.168.1.2)...
Wed 2011-11-30 22:47:43: [948:3883] Spam Blocker D=212.151.101.121.l2.apews.org TTL=(35) A=[127.0.0.2]
Wed 2011-11-30 22:47:43: [948:3883] APEWS listed, 99.7% certain it is spam
Wed 2011-11-30 22:47:43: [948:3883] Message will be accepted and X-RBL-Warning: header will be inserted.
Wed 2011-11-30 22:47:43: [948:3883] --> 250 , Sender ok
Wed 2011-11-30 22:47:43: [948:3883] <-- RCPT TO:
Wed 2011-11-30 22:47:43: [948:3883] --> 250 , Recipient ok
Wed 2011-11-30 22:47:44: [948:3883] <-- DATA
Wed 2011-11-30 22:47:44: [948:3883] --> 354 Enter mail, end with .
Wed 2011-11-30 22:47:44: [948:3883] --> 250 Ok, message saved
Wed 2011-11-30 22:47:45: [948:3883] <-- QUIT
Wed 2011-11-30 22:47:45: [948:3883] --> 221 See ya in cyberspace
Wed 2011-11-30 22:47:45: [948:3883] SMTP session successful, 2254 bytes transferred.
Wed 2011-11-30 22:47:45: [948:3883] Shuffling message(s) into proper queue(s)
Wed 2011-11-30 22:47:45: [948:3883] Message received from nm3-vm0.bullet.mail.in.yahoo.com [121.101.151.212] with SMTP for [Size 2245] {j:\localq\x00000000000.msg}

The connecting IP address belongs to Yahoo India and is listed as a CIDR [group of IP addresses] 121.101.150.0/23 within CIDR 121.101.144.0/20. In one of the earlier posts we were talking about setup and that the free webmail providers like Yahoo, Hotmail and Google are not listed in Apews but not to mark their servers as trusted or whitelisted, simply let them connect and go through the full SMTP process on your server including rDNS / PTR lookup as you feel necessary.

This listing is therefore a contradiction and surprises us a little, hmmm... requires some further research. Email delivery involves a dialog between two email servers resulting in some lines of text referred to as the email header. A lot of spam comes from a connecting IP address that sends data showing that it received the email from one or more email servers prior. In most cases this information can not be trusted as spam software is known to deliberately falsify the information in order to mislead the recipient in gaining a more trustworthy reputation. The exceptions to this are the professional email senders referred to in an earlier post and the free webmail providers like Yahoo, Hotmail and Google. Whilst they may hide or omit useful sender identifiable data, to our knowledge they don't deliberately falsify it.

In order to further examine this possible false positive, a copy of the actual email was obtained from the recipient. The email client program revealed further headers;

>from [127.0.0.1] by smtp107.mail.in.yahoo.com with NNFMP; 01 Dec 2011 03:49:03 -0000
>from [121.101.151.237] by nm3.bullet.mail.in.yahoo.com with NNFMP; 01 Dec 2011 03:49:03 -0000
>from [202.86.5.94] by tm2.bullet.mail.in.yahoo.com with NNFMP; 01 Dec 2011 03:49:29 -0000
>from zsdguhzdpyqlnviqt (cwkpaola1972@201.241.150.55 with login) by smtp107.mail.in.yahoo.com with SMTP; 01 Dec 2011 09:19:02 +0530 IST

We are almost certain that the email was passed between the Yahoo email servers as listed above. Working down the list we see that the Yahoo server named smtp107.mail.in.yahoo.com (IP address 202.86.5.94 checks out) was the one that received the email from a computer with IP address 201.241.150.55, which belongs to VTR, an ISP in Chile. At the time of writing, IP address 201.241.150.55 has named pc-55-150-241-201.cm.vtr.net, a format usually used for dynamic IP allocations, certainly not a commercial server.

Now let us look at the content of the email, just one line of text;

ZMLNIGXGCOBMThe_Electronic-Payments-AssociationÄ›

with a link to the following website http :// goo.gl / 5z4hU.

It seems suspicious that an email sender with a Chilean IP address would login to a Yahoo India webmail server to send only one email to the user on our network who does not know the sender. The content of the email is spam and quite rightly ended up in the spam folder.

You will need to judge for yourselves whether the Yahoo India email servers send mostly solicited emails or mostly spam. In recent weeks we have noticed a huge rise in the volume of spam being delivered by the free webail providers especially AOL.

L2.APEWS.ORG False Positive #5

Found another possible false positive. I say possible because it would depend on your email flow, server policies, user requirements etc. This one is a free email service in China so the probability is that there are mostly Chinese senders which may or may not be necessary to your network and users.

Wed 2011-11-30 22:46:47: [688:3882] Accepting SMTP connection from [60.28.228.177]
Wed 2011-11-30 22:46:47: [688:3882] Looking up PTR record for 60.28.228.177 (177.228.28.60.IN-ADDR.ARPA)
Wed 2011-11-30 22:46:48: [688:3882] D=177.228.28.60.IN-ADDR.ARPA TTL=(1440) PTR=[mail228-177.sinamail.sina.com.cn]
Wed 2011-11-30 22:46:48: [688:3882] Gathering A-records for PTR hosts
Wed 2011-11-30 22:46:49: [688:3882] D=mail228-177.sinamail.sina.com.cn TTL=(1) A=[60.28.228.177]
Wed 2011-11-30 22:46:49: [688:3882] --> 220 xxx.xxx.xxx ESMTP MDaemon 6.7.9; Wed, 30 Nov 2011 22:46:49 -0500
Wed 2011-11-30 22:46:49: [688:3882] <-- EHLO mail228-177.sinamail.sina.com.cn
Wed 2011-11-30 22:46:49: [688:3882] Performing reverse lookup on mail228-177.sinamail.sina.com.cn (looking for 60.28.228.177)
Wed 2011-11-30 22:46:49: [688:3882] D=mail228-177.sinamail.sina.com.cn TTL=(0) A=[60.28.228.177]
Wed 2011-11-30 22:46:49: [688:3882] --> 250-xxx.xxx.xxx Hello mail228-177.sinamail.sina.com.cn, pleased to meet you
Wed 2011-11-30 22:46:49: [688:3882] --> 250-ETRN
Wed 2011-11-30 22:46:49: [688:3882] --> 250-AUTH=LOGIN
Wed 2011-11-30 22:46:49: [688:3882] --> 250-AUTH LOGIN CRAM-MD5
Wed 2011-11-30 22:46:49: [688:3882] --> 250-8BITMIME
Wed 2011-11-30 22:46:49: [688:3882] --> 250 SIZE 0
Wed 2011-11-30 22:46:50: [688:3882] <-- MAIL FROM: SIZE=23421
Wed 2011-11-30 22:46:50: [688:3882] Performing reverse lookup on sina.com (looking for 60.28.228.177)
Wed 2011-11-30 22:46:50: [688:3882] D=sina.com TTL=(1) A=[12.130.132.30]
Wed 2011-11-30 22:46:51: [688:3882] P=010 D=sina.com TTL=(0) MX=[freemx3.sinamail.sina.com.cn]
Wed 2011-11-30 22:46:51: [688:3882] P=010 D=sina.com TTL=(0) MX=[freemx2.sinamail.sina.com.cn] {218.30.115.106}
Wed 2011-11-30 22:46:51: [688:3882] P=010 D=sina.com TTL=(0) MX=[freemx1.sinamail.sina.com.cn]
Wed 2011-11-30 22:46:51: [688:3882] P=005 D=sina.com TTL=(0) MX=[freemx.sinamail.sina.com.cn]
Wed 2011-11-30 22:46:51: [688:3882] D=freemx3.sinamail.sina.com.cn TTL=(30) A=[60.28.2.248]
Wed 2011-11-30 22:46:52: [688:3882] D=freemx1.sinamail.sina.com.cn TTL=(30) A=[202.108.3.242]
Wed 2011-11-30 22:46:52: [688:3882] D=freemx.sinamail.sina.com.cn TTL=(0) A=[202.108.3.242]
Wed 2011-11-30 22:46:52: [688:3882] Spam Blocker A-record resolution of [177.228.28.60.l2.apews.org] in progress (DNS Server: 192.168.1.2)...
Wed 2011-11-30 22:46:52: [688:3882] Spam Blocker D=177.228.28.60.l2.apews.org TTL=(35) A=[127.0.0.2]
Wed 2011-11-30 22:46:52: [688:3882] APEWS listed, 99.7% certain it is spam
Wed 2011-11-30 22:46:52: [688:3882] Message will be accepted and X-RBL-Warning: header will be inserted.
Wed 2011-11-30 22:46:52: [688:3882] --> 250 , Sender ok
Wed 2011-11-30 22:46:53: [688:3882] <-- RCPT TO:
Wed 2011-11-30 22:46:53: [688:3882] --> 250 , Recipient ok
Wed 2011-11-30 22:46:53: [688:3882] <-- DATA
Wed 2011-11-30 22:46:53: [688:3882] --> 354 Enter mail, end with .
Wed 2011-11-30 22:47:05: [688:3882] --> 250 Ok, message saved
Wed 2011-11-30 22:47:05: [688:3882] <-- QUIT
Wed 2011-11-30 22:47:05: [688:3882] --> 221 See ya in cyberspace
Wed 2011-11-30 22:47:05: [688:3882] SMTP session successful, 23613 bytes transferred.
Wed 2011-11-30 22:47:05: [688:3882] Shuffling message(s) into proper queue(s)
Wed 2011-11-30 22:47:05: [688:3882] Message received from mail228-177.sinamail.sina.com.cn [60.28.228.177] with SMTP for [Size 23602] {j:\localq\md00000000000.msg}

As before, any news will be reported here.