Re: Postfix Relay help

2009-04-23 Thread Barney Desmond
2009/4/24 Sriram Nyshadham :
> This is because the application owners want a setup where they want to relay 
> mails out ,only through an authenticated
> mail server (like postfix).

Please don't top-post; trim the quotes down to the relevant parts and
address issues below the quotes.

Okay, it was ambiguous what you meant when you said "We have an
application which needs a mail relay to send emails out" - most would
assume the application is running on the mail server.

The short answer is no, SASL is the only authentication mechanism
available to Postfix. SASL is a protocol, not a backend, which means
it's flexible enough to fulfil pretty much any perceivable
requirements.

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

You'll want to start here. SASL isn't particularly hard to setup, but
it'll take some work to fully understand. Understanding how it works
is important for ensuring it's providing the security you expect.

Postfix has support for two SASL providers, cyrus and dovecot. Cyrus
and Dovecot are both IMAP servers, but they happen to also provide
SASL backends. If you're already using one of these IMAP servers then
there's less work to do. If you haven't setup either before, Dovecot
is usually recommended as it's a bit simpler.


RE: Postfix Relay help

2009-04-23 Thread Sriram Nyshadham
This is because the application owners want a setup where they want to relay 
mails out ,only through an authenticated mail server (like postfix).


Thanks,
Sriram.

-Original Message-
From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] 
On Behalf Of Ralf Hildebrandt
Sent: Friday, April 24, 2009 3:18 AM
To: postfix-users@postfix.org
Subject: Re: Postfix Relay help

* Sriram Nyshadham :
> Hi All,
>
> I need help with the following scenario:
>
>
> 1.   We have an application which needs a mail relay to send emails out.

Yes.

> 2.   I am trying to install postfix which acts only as a RELAY server 
> (without any mailboxes on it)

Very simple.

> Since I also need an authentication mechanism,

Why would you need one?

--
Ralf Hildebrandt
Postfix - Einrichtung, Betrieb und Wartung   Tel. +49 (0)30-450 570-155
http://www.computerbeschimpfung.de
I have never seen anything fill up a vacuum so fast and still suck.
-- Rob Pike, commenting on the X Window System.

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Re: Postfix Relay help

2009-04-23 Thread Ralf Hildebrandt
* Sriram Nyshadham :
> Hi All,
> 
> I need help with the following scenario:
> 
> 
> 1.   We have an application which needs a mail relay to send emails out.

Yes.
 
> 2.   I am trying to install postfix which acts only as a RELAY server 
> (without any mailboxes on it)

Very simple.
 
> Since I also need an authentication mechanism, 

Why would you need one?

-- 
Ralf Hildebrandt
Postfix - Einrichtung, Betrieb und Wartung   Tel. +49 (0)30-450 570-155
http://www.computerbeschimpfung.de
I have never seen anything fill up a vacuum so fast and still suck.
-- Rob Pike, commenting on the X Window System.