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01.28.2008 at 04:40PM PST, ID: 23118055
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8.0

This is an SMTP protocol warning log for virtual server ID 1, connection #15

Asked by gavinandrewmcmillan in MS Forefront-ISA, Email Servers, Simple Mail Transfer Protocol (SMTP)

Tags: , , ,

Hello

I am getting the following error in my Event Viewer:

This is an SMTP protocol warning log for virtual server ID 1, connection #15. The remote host "203.16.214.182", responded to the SMTP command "mail" with "453 #4.1.8 Domain of sender address <jramos@ranido.com> does not exist  ". The full command sent was "MAIL FROM:<jramos@ranido.com> SIZE=5668  ".  This may cause the connection to fail.

I picked this up when I received an email from my ISP saying that my mail server was sending excessive spam. I enabled logging on SMTP and received the above error message. It continually occurs at random intervals - at least once every 10 minutes or so. I believe it is spam as I do not recognize the Mail From address. I have blocked the domain in ISA using the SMTP filter but I still get the message showing up in event viewer.

SMTP relay is disabled on my server.

Please advise me as to what should be my next step in:

1- making sure my server isnt being used to send spam
2- stopping the error from showing up in my event viewer

Regards
Gavin McMillanStart Free Trial
 
 
[+][-]01.28.2008 at 05:24PM PST, ID: 20764648

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About this solution

Zones: MS Forefront-ISA, Email Servers, Simple Mail Transfer Protocol (SMTP)
Tags: Microsoft, Exchange, sbs 2003, error 7002 for domain I dont know - This is an SMTP protocol warning log for virtual server ID 1, connection #15
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Solution Provided By: tgtran
Participating Experts: 1
Solution Grade: A
 
 
[+][-]01.28.2008 at 05:28PM PST, ID: 20764681

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20081112-EE-VQP-44 - Hierarchy / EE_QW_2_20070628