550 relay not permitted
- by Nick Swan
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?