Hi all, I need some advice. I changed domain hosts on 30th and I wanted to point my MX records to Onecom who are hosting my local server (exchange). Did that Tuesday... When you ping, it shows onecom IP. However no mails are coming in from outside. I have sent myself mail from gmail and it returns a mail delivery error as below: Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 relay not permitted (state 14). I am aware that propagation of my mail domain will take time (up to 72 hours) but I seem to still be having a problem. is this still a propagation issue? Please advice. Al