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niXar
Asked: 2009-10-21 11:10:18 +0800 CST

Postfix config with a single catch-all user

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Here is a very simple question that I wasn't able to find an easy answer for being entirely new to postfix:

I want all mail coming in from SMTP (or through local delivery for that matter) to drop in a single (special purpose) user's Maildir, for later pick-up by a web app through IMAP (Dovecot).

I already have it configured to find the destination through

local_recipient_maps = unix:passwd.byname

and created a user for that single purpose, but I'd rather have Postfix not even try to look up the user named in the incoming mail, just take the one user I specify in the config.

What's the simplest and most secure way to do this?

Addendum: this shows how to use virtual_alias_map, but I don't want virtual domains, I want all emails coming in, regardless of the (multiple) domains I've set up to go into the catch-all.

postfix

2 Answers

  1. Best Answer

    Check the very bottom of this page for information on the luser_relay variable:

    http://www.postfix.org/rewrite.html

    Perhaps that will get you the functionality you desire.

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  2. take a look at the always_bcc option. All Mail which gets in or out will be delivered to defined mailbox/user/whatever.

    If you only want incoming Mails use 

    recipient_bcc_maps = hash:/etc/postfix/recipient_bcc

    or for outgoing mail

    sender_bcc_maps =  hash:/etc/postfix/sender_bcc

    In the maps you can define * to match all domains, or filter domain specific with

    (atsign)foobar.com mailbox

    If you have your mapfile, build it with postmap hash:/etc/postfix/yourhashmap

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