I have my domain askerov.net registered with mydomain.com so that all incoming email is forwarded to my Gmail account using the email forwarding feature of mydomain.com. Note that I don't have Google Apps for this account, just regular email.
Things worked fine for a while except for the occasional bounce here and there, then a few days ago emails started bouncing all the time.
Here's what the configuration looks like in mydomain.com:
@ --> mx.askerov.net (priority 30)
askerov.net --> ns1.yourhostingaccount.com askerov.net --> ns2.yourhostingaccount.com
mx --> 18.104.22.168 mx --> 22.214.171.124 mx --> 126.96.36.199 * --> 188.8.131.52 askerov.net --> 184.108.40.206
The question is, if I am simply forwarding email to email@example.com do I really need to have the MX record and the corresponding A records? I suspect that the MX stuff is causing my email delivery problems.
Email delivery is now working after I removed and re-added email forwarding. Not sure what effect that had on anything because the DNS settings remained unchanged as far as I can see. But at least I am now getting my email again!