how to change default email address for postfix?

Question

I have a server running python, php, perl, ruby, and I have couple applications which also send mail. I was wondering in case if one of the applications don't specify a from email address, the sender email address is set to [email protected] and the sender name was "http".

I was able change the sender name by going into /etc/passwd and changing the name to what I wanted, but how do I change [email protected] to [email protected]?

You would probably get a better response if you ask this on http://superuser.com/ which is one of StackOverflow's many sister sites - and more tailored to your question. — Taryn East, May 05 '13 at 00:49

score 40 · Answer 1 · edited Jan 17 '15 at 17:47

40

You can use the smtp_generic_maps of postfix to rewrite email headers for outgoing smtp mail:

user:~$ echo "[email protected]  [email protected]" >> /etc/postfix/generic 
user:~$ echo "smtp_generic_maps = hash:/etc/postfix/generic" >> /etc/postfix/main.cf
user:~$ postmap /etc/postfix/generic
user:~$ service postfix restart

edited Jan 17 '15 at 17:47

Thomas8

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answered Mar 28 '12 at 12:00

knittl

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echo "[email protected] [email protected]" >> /etc/postfix/generic might be easier for many to read. – G. Allen Morris III Jan 19 '13 at 00:49
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@knittl What about also overriding sender name? It works but send email as "[email protected](root)". Almost there, but not quite – katit Apr 29 '15 at 04:35
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"postmap: warning: /etc/postfix/generic, line 1: expected format: key whitespace value" – Tom Feb 01 '16 at 04:09
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You can also skip the command `postmap /etc/postfix/generic` and tell main.cf that you use a `texthash` instead of a `hash`: `echo "smtp_generic_maps = texthash:/etc/postfix/generic" >> /etc/postfix/main.cf` – Daan Jul 05 '16 at 14:07

how to change default email address for postfix?

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