From: Magnus Bäck (magnusdsek.lth.se)
Date: Thu Feb 07 2008 - 09:18:33 CST

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On Thursday, February 07, 2008 at 15:54 CET,
     Alejandro Facultad <alejandro_facultadyahoo.com.ar> wrote:

> Dear all, I have Postfix 2.3.8 as my mail server and I want this: if
> someone write a message to a non existant mail account from my domain,
> he/she must get a response code = 250 and not 550. I want the same
> response code that he/she will obtain in case of writting to an
> existing mail account.

What on earth would be the point of this? It will cause for problems
for clients who think Postfix has accepted a recipient and continue
with DATA, to which Postfix will respond that there aren't any valid
recipients.

Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mail.example.com ESMTP Postfix (2.3.2)
HELO localhost
250 mail.example.com
MAIL FROM:<>
250 2.1.0 Ok
RCPT TO:<nonexistentuserexample.com>
250 2.1.5 Ok
DATA
554 5.5.1 Error: no valid recipients

You're asking the wrong question. You should ask how you should solve a
specific problem, not how to implement your home-grown solution to the
same problem.

[...]

--
Magnus Bäck
magnusdsek.lth.se

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