HardwareDude
asked on
Exchange: Sent messages bounce back
Anybody familiar with a problem like this?:
When we email someone in the Bellsouth domain, we get this bounce back:
Running SBS 2003
From: System Administrator
Sent: Friday, June 13, 2008 8:35 AM
To: Sandra User
Subject: Undeliverable: Todays topic
Your message did not reach some or all of the intended recipients.
Subject: Undeliverable: Todays topic
Sent: 6/13/2008 8:35 AM
The following recipient(s) could not be reached:
someone@bellsouth.net on 6/13/2008 8:35 AM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<host.iccbuild.com #5.5.0 smtp;550-68.213.237.115 blocked by ldap:ou=rblmx,dc=att,dc=ne
When we email someone in the Bellsouth domain, we get this bounce back:
Running SBS 2003
From: System Administrator
Sent: Friday, June 13, 2008 8:35 AM
To: Sandra User
Subject: Undeliverable: Todays topic
Your message did not reach some or all of the intended recipients.
Subject: Undeliverable: Todays topic
Sent: 6/13/2008 8:35 AM
The following recipient(s) could not be reached:
someone@bellsouth.net on 6/13/2008 8:35 AM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<host.iccbuild.com #5.5.0 smtp;550-68.213.237.115 blocked by ldap:ou=rblmx,dc=att,dc=ne
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As per the article posted above, you can request AT&T remove your entry, but if you don't put right the issues I've already mentioned, you will quickly find yourself back on at least that RBL, and potentially many others in the future.
However in saying that, your IP is not listed here - http://www.mxtoolbox.com/blacklists.aspx
Have you got a reverse DNS record set?
Dov.