Mail domain at recipient
I'm using Postfix with Dovecot for mail server. And everything works but my mail domain at recipient is wrong. When I send mail to somebody my email address is firstname.lastname@example.org (for example) and I can't find how to put it right so it can be email@example.com just. Problem is when they repsond to firstname.lastname@example.org mail won't get delivered since domain for mail doesn't exist. They need to retype mail without subdomain after @ in order to be able send mail. Any help is appreciated.