550 relay not permitted

Posted by Nick Swan on Server Fault See other posts from Server Fault or by Nick Swan
Published on 2009-09-03T09:47:26Z Indexed on 2012/03/24 23:31 UTC
Read the original article Hit count: 293

Filed under:

email

|

smtp

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smtp-relay

We are using Fogbugz on our server to do customer support emails. Occasionally we get errors coming back when sending emails which say:

550 relay not permitted

This seems to happen at random though, sometimes sending an email to a person works, next time to the same person it'll bounce back.

I've tried setting up reverse DNS with the server host and creating the SPF record in GoDaddy but we still get some of these errors.

Is there anything else I can do, and is there a way of testing these are actually configured correctly?

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