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5.0.0 smtp; 550 #5.1.0 Address rejected

Posted on 2013-11-25
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Last Modified: 2013-12-09
I am getting this error below: Please advice:

Diagnostic information for administrators: Generating server: server-17.bemta-12.messagelabs.com domain@domain.com tmxmailsmtp.domain.com #<tmxmailsmtp.telmex.com #5.0.0 smtp; 550 #5.1.0 Address rejected.> #SMTP# Original message headers
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Question by:claudiamcse
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Ernie Beek earned 500 total points
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Just like the message says, your IP address is rejected.
This can have several reasons, but I think the easiest way is to check with those who manage that server as to why your address is blocked (blacklisted, no/wrong SPF record, etc.).
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Expert Comment

by:Radweld
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check to see if your public IP has been blacklisted, http://mxtoolbox.com/blacklists.aspx
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Expert Comment

by:Brian B
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In the meantime, contact the sender and find out if they can whitelist your server for the time being. This is not the final solution though. If you have been blacklisted, you have bigger problems than just one server and need to find out why you are on a black list.
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Author Comment

by:claudiamcse
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Are you saying that our Exchange server is white listed or their server for the domain mentioned in NDR is blacklisted?

Our Exchnage server is not white listed anywhere. I ran the test already.
12.messagelabs.com domain@domain.com tmxmailsmtp.domain.com
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by:Brian B
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There may be some information missing that would help us diagnose the issue. First of all, the term is "black listed"... Just want to make sure you were doing the correct searches. A blacklist is a means of recording information about "bad" servers that can be shared with other servers to cut down on spam. That is not to say your server is "bad". It may have been listed by mistake.

You have most likely filtered out the information about your real domain name. However there may be more relevant information in the rejection notice that you haven't mentioned, or perhaps was in an attachment?

If there is no other information other than what you told us, you or the person you are trying to reach will have to check with the people who own the receiving server in this case and perhaps they can tell you more. If there is no explanation, perhaps they can add your server to their whitelist.
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Author Closing Comment

by:claudiamcse
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Thanks!
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by:Brian B
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Could you please expand on what the problems was? It appears that you didn't understand the answer you were given. Another expert tried to clarify and then you solved the problem? In which case, if any of the other answers were helpful, they should be awarded points.
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