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Emails kicking back.

Posted on 2009-04-09
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Last Modified: 2013-12-09
A user is trying to send an email to a specific domain, but when they do they receive a kickback.

I tried googling this but could not find much in the way of information. Could it be that the receiving domain is marking us as spam and rejecting it?

Your message did not reach some or all of the intended recipients.

      Subject:      

The following recipient(s) could not be reached:

      User@Domain.com on 4/8/2009 8:05 PM
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.
            < Server.MyDomain.com #5.0.0 X-Proprietary; host smtp03.Domain.com[195.246.114.70] said:    551 5.0.0 SPAM NOT ALLOWED (in reply to end of DATA command)>
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Question by:Drakin030
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Expert Comment

by:zelron22
ID: 24108718
Does your ISP have a correct reverse DNS entry for your domain/mail server?
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Author Comment

by:Drakin030
ID: 24108755
ZeIron22,

We actually have an Authoritative DNS Server on our end that contains all DNS entries.

I checked the DNS list and there is a checkbox beside our mail server (Reverse DNS) That box is blank as with every other DNS entry.

Should we check that?

(The device that does this is a PowerLink 100 from Astrocom)
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Author Comment

by:Drakin030
ID: 24108764
Actually ZelIron22 I'm sorry it does have a reverse DNS Entry.
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LVL 15

Expert Comment

by:zelron22
ID: 24109823
You're hosting your own external DNS?  

Assuming that the specific domain isn't Yahoo, Hotmail, Google, etc., you may need to contact the IT staff at the other end to see if they have you blacklisted.


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Accepted Solution

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Drakin030 earned 0 total points
ID: 24110144
Well the user has reported that everything is working now.

My only guess was that it was some kind of spam blocker, or as you mentioned, blacklisting.

Not sure how to close this case out though...
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LVL 15

Expert Comment

by:zelron22
ID: 24110224
Leave it open for a couple of days and if nothing happens, close it as if it fixed itself.
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