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SMTP Attacks?

Subject: SMTP Attacks?
Date: Fri, 1 Apr 2005 10:46:57 -0500
Has anyone seen this showing up in there SMTP server logs?

Tim Mapes

Fri 2005-04-01 04:55:55: Accepting SMTP connection from [217.128.81.65 :
3775]
Fri 2005-04-01 04:55:55: Looking up PTR record for 217.128.81.65
(65.81.128.217.IN-ADDR.ARPA)
Fri 2005-04-01 04:55:55: D=65.81.128.217.IN-ADDR.ARPA TTL=(1439)
PTR=[areims-105-2-1-65.w217-128.abo.wanadoo.fr]
Fri 2005-04-01 04:55:55: Gathering A-records for PTR hosts
Fri 2005-04-01 04:55:55: D=areims-105-2-1-65.w217-128.abo.wanadoo.fr
TTL=(1440) A=[217.128.81.65]
Fri 2005-04-01 04:55:55: --> 220 combine.com ESMTP MDaemon 7.2.3; Fri, 01
Apr 2005 04:55:55 -0500
Fri 2005-04-01 04:55:55: <-- POST / HTTP/1.0
Fri 2005-04-01 04:55:55: --> 500 What? I don't understand that.
Fri 2005-04-01 04:55:55: <-- Host: combine.com:25
Fri 2005-04-01 04:55:55: --> 500 What? I don't understand that.
Fri 2005-04-01 04:55:55: <-- Content-Length: 3384
Fri 2005-04-01 04:55:55: --> 500 What? I don't understand that.
Fri 2005-04-01 04:55:55: <-- Content-Type: text/plain
Fri 2005-04-01 04:55:55: Too many errors encountered
Fri 2005-04-01 04:55:55: SMTP session terminated (Bytes in/out: 3473/178)

Fri 2005-04-01 04:55:59: Accepting SMTP connection from [62.58.60.74 : 2421]
Fri 2005-04-01 04:55:59: Looking up PTR record for 62.58.60.74
(74.60.58.62.IN-ADDR.ARPA)
Fri 2005-04-01 04:55:59: Name server reports domain name unknown
Fri 2005-04-01 04:55:59: --> 220 combine.com ESMTP MDaemon 7.2.3; Fri, 01
Apr 2005 04:55:59 -0500
Fri 2005-04-01 04:55:59: <-- POST / HTTP/1.0
Fri 2005-04-01 04:55:59: --> 500 What? I don't understand that.
Fri 2005-04-01 04:55:59: <-- Via: 1.0 CI00094
Fri 2005-04-01 04:55:59: --> 500 What? I don't understand that.
Fri 2005-04-01 04:55:59: <-- Host: combine.com
Fri 2005-04-01 04:55:59: --> 500 What? I don't understand that.
Fri 2005-04-01 04:55:59: <-- Content-Length: 3487
Fri 2005-04-01 04:55:59: Too many errors encountered
Fri 2005-04-01 04:55:59: SMTP session terminated (Bytes in/out: 3615/178)

Fri 2005-04-01 09:46:01: Accepting SMTP connection from [202.83.175.98 :
31635]
Fri 2005-04-01 09:46:01: Looking up PTR record for 202.83.175.98
(98.175.83.202.IN-ADDR.ARPA)
Fri 2005-04-01 09:46:01: D=98.175.83.202.IN-ADDR.ARPA TTL=(1440)
PTR=[ntc.net.pk]
Fri 2005-04-01 09:46:01: Gathering A-records for PTR hosts
Fri 2005-04-01 09:46:01: D=ntc.net.pk TTL=(0) A=[202.83.167.223]
Fri 2005-04-01 09:46:01: --> 220 combine.com ESMTP MDaemon 7.2.3; Fri, 01
Apr 2005 09:46:01 -0500
Fri 2005-04-01 09:46:01: <-- POST / HTTP/1.0
Fri 2005-04-01 09:46:01: --> 500 What? I don't understand that.
Fri 2005-04-01 09:46:01: <-- Via: 1.0 PROXY
Fri 2005-04-01 09:46:01: --> 500 What? I don't understand that.
Fri 2005-04-01 09:46:01: <-- Host: combine.com:25
Fri 2005-04-01 09:46:01: --> 500 What? I don't understand that.
Fri 2005-04-01 09:46:01: <-- Content-Length: 929
Fri 2005-04-01 09:46:01: Too many errors encountered
Fri 2005-04-01 09:46:01: SMTP session terminated (Bytes in/out: 128/178)

Fri 2005-04-01 09:46:36: Accepting SMTP connection from [81.115.31.217 :
4200]
Fri 2005-04-01 09:46:36: Looking up PTR record for 81.115.31.217
(217.31.115.81.IN-ADDR.ARPA)
Fri 2005-04-01 09:46:36: D=217.31.115.81.IN-ADDR.ARPA TTL=(1440)
PTR=[host217-31.pool81115.interbusiness.it]
Fri 2005-04-01 09:46:36: Gathering A-records for PTR hosts
Fri 2005-04-01 09:46:36: D=host217-31.pool81115.interbusiness.it TTL=(1440)
A=[81.115.31.217]
Fri 2005-04-01 09:46:36: --> 220 combine.com ESMTP MDaemon 7.2.3; Fri, 01
Apr 2005 09:46:36 -0500
Fri 2005-04-01 09:46:36: <-- POST / HTTP/1.0
Fri 2005-04-01 09:46:36: --> 500 What? I don't understand that.
Fri 2005-04-01 09:46:36: <-- Via: 1.0 SERVER-NT
Fri 2005-04-01 09:46:36: --> 500 What? I don't understand that.
Fri 2005-04-01 09:46:36: <-- Host: combine.com
Fri 2005-04-01 09:46:36: --> 500 What? I don't understand that.
Fri 2005-04-01 09:46:36: <-- Content-Length: 1075
Fri 2005-04-01 09:46:36: Too many errors encountered
Fri 2005-04-01 09:46:36: SMTP session terminated (Bytes in/out: 1205/178)

Fri 2005-04-01 09:49:10: Accepting SMTP connection from [167.7.127.180 :
50981]
Fri 2005-04-01 09:49:10: Looking up PTR record for 167.7.127.180
(180.127.7.167.IN-ADDR.ARPA)
Fri 2005-04-01 09:49:10: Name server reports domain name unknown
Fri 2005-04-01 09:49:10: --> 220 u4ya.com ESMTP MDaemon 7.2.3; Fri, 01 Apr
2005 09:49:10 -0500
Fri 2005-04-01 09:49:10: <-- POST / HTTP/1.0
Fri 2005-04-01 09:49:10: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:10: <-- Via: 1.0 WILGOSBDC
Fri 2005-04-01 09:49:10: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:10: <-- Host: u4ya.com:25
Fri 2005-04-01 09:49:10: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:10: <-- Content-Length: 918
Fri 2005-04-01 09:49:10: Too many errors encountered
Fri 2005-04-01 09:49:10: SMTP session terminated (Bytes in/out: 1047/175)

Fri 2005-04-01 09:49:43: Accepting SMTP connection from [201.6.102.4 : 3317]
Fri 2005-04-01 09:49:43: Looking up PTR record for 201.6.102.4
(4.102.6.201.IN-ADDR.ARPA)
Fri 2005-04-01 09:49:43: D=4.102.6.201.IN-ADDR.ARPA TTL=(59)
PTR=[c9066604.virtua.com.br]
Fri 2005-04-01 09:49:43: Gathering A-records for PTR hosts
Fri 2005-04-01 09:49:43: D=c9066604.virtua.com.br TTL=(60) A=[201.6.102.4]
Fri 2005-04-01 09:49:43: --> 220 u4ya.com ESMTP MDaemon 7.2.3; Fri, 01 Apr
2005 09:49:43 -0500
Fri 2005-04-01 09:49:43: <-- POST / HTTP/1.0
Fri 2005-04-01 09:49:43: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:43: <-- Content-Type: text/plain
Fri 2005-04-01 09:49:43: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:43: <-- Content-Length: 925
Fri 2005-04-01 09:49:43: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:43: <--
Fri 2005-04-01 09:49:43: Too many errors encountered
Fri 2005-04-01 09:49:43: SMTP session terminated (Bytes in/out: 993/175)

Fri 2005-04-01 09:49:50: Accepting SMTP connection from [211.78.176.252 :
50889]
Fri 2005-04-01 09:49:50: Looking up PTR record for 211.78.176.252
(252.176.78.211.IN-ADDR.ARPA)
Fri 2005-04-01 09:49:50: D=252.176.78.211.IN-ADDR.ARPA TTL=(1439)
PTR=[adsl-211-78-176-252.hcon.sparqnet.net]
Fri 2005-04-01 09:49:50: Gathering A-records for PTR hosts
Fri 2005-04-01 09:49:50: D=adsl-211-78-176-252.hcon.sparqnet.net TTL=(1440)
A=[211.78.176.252]
Fri 2005-04-01 09:49:50: --> 220 u4ya.com ESMTP MDaemon 7.2.3; Fri, 01 Apr
2005 09:49:50 -0500
Fri 2005-04-01 09:49:50: <-- POST / HTTP/1.0
Fri 2005-04-01 09:49:50: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:50: <-- Via: 1.0 ISA
Fri 2005-04-01 09:49:50: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:50: <-- Host: u4ya.com:25
Fri 2005-04-01 09:49:50: --> 500 What? I don't understand that.
Fri 2005-04-01 09:49:50: <-- Content-Length: 932
Fri 2005-04-01 09:49:50: Too many errors encountered
Fri 2005-04-01 09:49:50: SMTP session terminated (Bytes in/out: 1055/175)

--
NTBugtraq Editor's Note:

Most viruses these days use spoofed email addresses. As such, using an 
Anti-Virus product which automatically notifies the perceived sender of a 
message it believes is infected may well cause more harm than good. Someone who 
did not actually send you a virus may receive the notification and scramble 
their support staff to find an infection which never existed in the first 
place. Suggest such notifications be disabled by whomever is responsible for 
your AV, or at least that the idea is considered.
--

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