I have a domain (
alarinsights.com) setup with email hosted by Office365. Everything works fine, except when I try to send myself email from gmail, I get a message bounced back saying no such user. The server that sent that message back, however, is not Office365 - it's the server where my A record is pointing, not the MX record.
There's no reason the A and MX records need to point to the same server, right? Why would gmail be picking up that address?
If it's important, the "bad" server was hosting my email at one point (a couple weeks ago). Is Gmail caching it somehow?