I had a server setup working perfectly for now. However, I like to change the
A record to point the abc.com to the web server instead mail server which currently pointed to.
however, once this A record change, the mail server will starting delivery the mail to the web server instead of the mail server.
The mx record remain
abc.com. MX 10 mail.abc.com.
mail.abc.com. IN A remain the same to the mail server.
any thing to be change the zmprov or MTA?