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outgoing email cannot be received.

Posted on 2008-06-13
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Last Modified: 2013-11-30
We setup a spam filtering box as the first stop of incoming email of our company.   Our outgoing emails are being handed by another exchange box.  

The spam filtering box has a mx record on the public dns server.  

One of our vendors is saying they cannot receive email from our domain at all.  They told us they have put our domain name into the whitelist of their spam filter.  

When we tried to telnet to their domain from our outgoing exchange box via port 25, connection is being rejected right the way.

What could be wrong?  Is it ourside or theirs
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Question by:search5354
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Andres Perales earned 1500 total points
ID: 21781765
It is there side, you spam filtering box, should not effect you sending email messages, it has to be the distant end...you did the correct troubleshooting step, in regards to trying to telnet to the mail server on port 25...have you done nslookups on their email domain name also to see if their mx records are good and valid that can be an additional step for you to try...have you gotten any other compliants from vendors or other that you send mail to regularly?
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