I have a question as to postfix add a new domain to be able to it to send and receive e-mails? How to redirect all emails sent to this domain went to an external email address?
Regards, Darek
Adding a domain will be adding it to mydestination= example.com in main.cf
the second question is called a "catch all"
Mapping is done using /etc/postfix/virtual file.
vim /etc/postfix/virtual
Append code as follows, replacing domain and emailusername with actual values:
@yourdomain.com emailusername
Save and close the file. Run following command:
postmap /etc/postfix/virtual
Also make sure you have following line in /etc/postfix/main.cf file:
virtual_alias_maps = hash:/etc/postfix/virtual
If you just added above, line reload postfix:
service postfix reload