450 Error with Postfix

Posted by Shiv on Server Fault See other posts from Server Fault or by Shiv
Published on 2010-05-12T05:44:59Z Indexed on 2010/05/12 5:55 UTC
Read the original article Hit count: 259

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postfix

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admin

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emailserver

I have setup postfix to send outgoing mail, It works fine for most of the cases except for some e.g duke.alumni.edu where it gives me a 450 error, even though the email address is valid.

This is the exact error I get Sender address rejected: Domain not found (in reply to RCPT TO command))

Any suggestions on how I can rectify this?

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