As long as you can access email on both servers, you’ll never lose emails during the DNS propagation. You could even have emails sent to one server forward over for convenience.
[QUOTE=hl;2342471]As long as you can access email on both servers, you’ll never lose emails during the DNS propagation. You could even have emails sent to one server forward over for convenience.[/QUOTE]
That makes me curious to what happens if you sign up for 2 Gmail accounts, set each one to forward to the other, and you send an email to one of them… How fast would your limit fill up?