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8.6

SMTP Connector Full of Spam!

Asked by gqchris in Exchange Email Server

Tags: 0, spam, outboundconnectioncommand, smtp

HEy EVeryone,

I am having another issue with a client running SBS Server 2000 with Exchange 2000. The SMTP connector is sending out spam like crazy, and I cant find where it is coming from! I figured it was a reverse NDR attack, but I have turned off NDR's a month ago. I have tested the Port 25 to make sure it is not an open relay, which it is not. I have ran every Anti Virus solution out there. Anyideas where this is coming from? Here is a bit of the SMTP logging that I have captured.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

004-10-22 17:37:50 65.248.18.232 OutboundConnectionResponse SMTPSVC1 CAELWYN01 - 25 - 0 0 45 0 79 SMTP - - - -
2004-10-22 17:37:50 65.248.18.232 OutboundConnectionCommand SMTPSVC1 CAELWYN01 - 25 EHLO 0 0 4 0 125 SMTP - - - -
2004-10-22 17:37:50 65.248.18.232 OutboundConnectionResponse SMTPSVC1 CAELWYN01 - 25 - 0 0 20 0 219 SMTP - - - -
2004-10-22 17:37:50 65.248.18.232 OutboundConnectionCommand SMTPSVC1 CAELWYN01 - 25 MAIL 0 0 4 0 219 SMTP - - - -
2004-10-22 17:37:50 65.248.18.232 OutboundConnectionResponse SMTPSVC1 CAELWYN01 - 25 - 0 0 6 0 297 SMTP - - - -
2004-10-22 17:37:50 65.248.18.232 OutboundConnectionCommand SMTPSVC1 CAELWYN01 - 25 RCPT 0 0 4 0 297 SMTP - - - -
2004-10-22 17:37:51 65.248.18.232 OutboundConnectionResponse SMTPSVC1 CAELWYN01 - 25 - 0 0 99 0 1485 SMTP - - - -
2004-10-22 17:37:51 65.248.18.232 OutboundConnectionCommand SMTPSVC1 CAELWYN01 - 25 RSET 0 0 4 0 1485 SMTP - - - -
2004-10-22 17:37:51 65.248.18.232 OutboundConnectionResponse SMTPSVC1 CAELWYN01 - 25 - 0 0 6 0 1579 SMTP - - - -
2004-10-22 17:37:51 65.248.18.232 OutboundConnectionCommand SMTPSVC1 CAELWYN01 - 25 QUIT 0 0 4 0 1579 SMTP - - - -
2004-10-22 17:37:51 65.248.18.232 OutboundConnectionResponse SMTPSVC1 CAELWYN01 - 25 - 0 0 7 0 1657 SMTP - -
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Any ideas on what this may be??? I am not sure how to decipher the SMTP logs! TIA...Chris
 
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[+][-]10/22/04 04:14 PM, ID: 12385971Accepted Solution

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Zone: Exchange Email Server
Tags: 0, spam, outboundconnectioncommand, smtp
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Solution Provided By: Sembee
Participating Experts: 2
Solution Grade: A
 
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