I own a shared hosting to host all my email, with email address firstname.lastname@example.org
I setup a local mail server using centos, ispconfig, fetchmail and postfix.
I created only email address email@example.com
at my local mail server, because i would like to remain firstname.lastname@example.org
on my shared hosting while i can still check mail using email@example.com
due to my local mail server do not have any static public ip
problem i have here is whenever i try to send mail from firstname.lastname@example.org
, i get reject message from my local mail server about unknown local user.
Please advice how to solve this problem