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Help with exim_mainlog

Posted on 2010-09-13
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Last Modified: 2013-11-30
Someone is sending a ton of spam out from my server but I can't figure out who the sender is. I attached a few lines from my log. The sender appears to be 1Ounp6-0008So-0z, is that some sort of ID created by exim?

Thank you

2010-09-13 09:15:01 1Ounp6-0008So-0z => piggotwe@carec.paho.org R=send_to_smart_host T=remote_smtp H=k2smtpout-                                              v01.prod.mesa1.secureserver.net [64.202.189.86]*
2010-09-13 09:15:01 1Ounp6-0008So-0z -> labastwa@carec.paho.org R=send_to_smart_host T=remote_smtp H=k2smtpout-                                              v01.prod.mesa1.secureserver.net [64.202.189.86]*
2010-09-13 09:15:01 1Ounp6-0008So-0z -> anguilla.chamber@gcc.net R=send_to_smart_host T=remote_smtp H=k2smtpout                                              -v01.prod.mesa1.secureserver.net [64.202.189.86]*

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Question by:itsofmi
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6 Comments
 
LVL 45

Expert Comment

by:Kent Olsen
ID: 33662366
Hi itsofmi,

You probably have SMTP relay enabled.  Some spammer is just routing his mail through you to mask his true identity.


Kent
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Expert Comment

by:jar3817
ID: 33663172
1Ounp6-0008So-0z is the message id...
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Author Comment

by:itsofmi
ID: 33663267
is there any way to see the sender in the mainlog?
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Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

 
LVL 26

Expert Comment

by:jar3817
ID: 33663708
Not sure (I'm a Sendmail guy), but this command should show you queued messages with the sender and recipient addresses:

# exim -bp

So if you still have spam queued up, you can see the sender address
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Kent Olsen earned 250 total points
ID: 33664406
You should be able to look at the network packets and examine in incoming IP addresses.  If you're acting as an SMTP relay there should be a lot of connections from a single address.
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Assisted Solution

by:jar3817
jar3817 earned 250 total points
ID: 33664427
Try:

# netstat -an |grep :25

That'll show you active connections on port 25.
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Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

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