Postifx and virtual users (user unknown)

[Alexander Dalloz]

Am Do, den 07.07.2005 schrieb redhatdude at bellsouth.net um 1:31:

> Hey Alexander,
> I did something that I don't know if it's right, but it worked.
> I uncommented the line local_recipient_maps =  and left it blank. Now  
> all the emails to my IMAP account get passed through to cyrus. I can  
> receive email without a problem. Now, I'm sure that what I did was  
> not good. This at least gives a clue as to where the problem lies. So  
> what should I do to fix the problem of Postifix not recognizing my  
> IMAP users?

It is important that you use the recipient map! See my comment below.

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

What the map does is map valid recipient addresses to local mailboxes.
All non existing recipient addresses will be rejected then with a valid
DSN.

> Hehe, I just noticed that I can even email saddam- 
> hussein at mydomain.com and Postfix will not reject it and process it,
> I'm screwed.

Sure :| If you review one of my previous answers in the thread about
Cyrus-IMAPd you will find a warning about using the create on post
option of the autocreate patch. You now see the effect: each spam mail
to a local domain but with a random, non existing account will create
you a new mailbox.

> EJ

Alexander



-- 
Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773
legal statement: http://www.uni-x.org/legal.html
Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.11-1.35_FC2smp 
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