Domain of sender address does not resolve (in reply to MAIL FROM command)

Posted by horen on Server Fault See other posts from Server Fault or by horen
Published on 2012-07-23T11:15:28Z Indexed on 2012/10/15 3:42 UTC
Read the original article Hit count: 475

Filed under:

dns

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email

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postfix

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emailserver

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email-bounces

When sending out emails with postfix I sometimes get this error:

451 #4.1.8 Domain of sender address <[email protected]> does not resolve 
(in reply to MAIL FROM command)

The domain mydomain.tld is resolvable though, meaning A, MX, PTR records are set properly.

However, the sending server does have a different domain anotherdomain.tld but it is allowed to send emails from mydomain.tld since I set the MX records of mydomain.tld to anotherdomain.tld. The envelope from of the problematic emails is [email protected].

Is there some other dns entry I have to set?

Or how else could I solve the problem? (I would like to keep the server structure though)

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