Postfix outgoing address change

ISSUE:  When you install Postfix, the default outgoing address on that server will be apache@machinename.local.

RESOLUTION:  To change the outgoing address or the FROM address from your mailings, make the following changes:

1. edit the /etc/postfix/main.cf file
2. change the mydomain field to your mail domain [mydomain = mydomain.com]
3. Add the following text to the bottom of the file:
   • smtp_generic_maps = hash:/etc/postfix/generic
4. Save the main.cf file and exit
5. edit the /etc/postfix/generic file
6. at the bottom of the file you need to map the email addresses to the ones you want.
   • apache@machinename.local     myemail@mydomain.com
   • root@machinename.local           myemail@mydomain.com
   • @machinename.local                 myemail@mydomain.com (this can be a catchall, I would test)
7. Save the generic file and exit
8. Create the postfix db by typing:
   • postmap /etc/postfix/generic
9. restart postfix and test