Hi there, I'm on a GoDaddy VPS using Plesk 11.0.9. Inbound mail was working fine until Saturday, then all of a sudden it stopped. I worked with GoDaddy's tech support for a little while (who was pretty much useless) and they threw up their standard "Its a non managed server, so it's on you to fix it line" which always thrills me, especially when things work forever and then stop and they immediately cop out and say that crap. Anyway, enough of my ranting. So the error message is this: Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the server for the recipient domain xxxxxx.com by mail.xxxxxx.com. [IP Address]. The error that the other server returned was: 554 mail server permanently rejected message (#5.3.0) As a means of troubleshooting, I disabled spam assassin and the Plesk Antivirus and restarted the inbound and outbound mail services. Still to no avail. Non existant user's email is the only thing that should reject automatically and I'm pretty sure I had the right setup from the beginning but now all of this has me wondering. Anyone have any ideas?