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I'm using Ubuntu 12.04 with postfix configured as satellite system that relays outgoing mail to Gmail. For sake of example, my registered domain is example.com I want root cronjobs' error output to be mailed to my real david@example.com inbox. I have this relay working correctly.

But these root cronjobs are set by default to email to root@example.com which isn't a real email address. I have in my /etc/aliases:

root: david@example.com

example.com isn't listed in postfix's main.cf's mydestination so postfix doesn't think this mail is local. It bypasses processing via /etc/aliases and tries to send to root@example.com.

A workaround is adding MAILTO=david at the top of each cron file. But there are many. Another workaround is to setup root@example.com as a real inbox that forwards to david@example.com. Is there a better way? I.e. is there a way to relay emails that have local domains but still process their addressee with /etc/aliases?

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2 Answers 2

I guess you could use a virtual.

If example.com is your domain on postfix

on /etc/postfix/main.cf

virtual_alias_maps = hash:/etc/postfix/virtual

on /etc/postfix/virtual

root@example.com    dave

after edit

postmap hash:/etc/postfix/virtual

Should be working.

If i understood right your question, know mails to root@example.com wil go to local user dave.

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This works for Centos 6 :) Thx –  MariuszS Nov 25 '13 at 14:37

if david is also a local account, then you could have the alias line be local-only, and then set up the david account to do the forwarding. /etc/aliases would be:

root: david

You could then use other postfix rules or a .forward file on the david account to get the mail to gmail.

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1  
This is not working with relaying... –  MariuszS Nov 25 '13 at 14:38

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