authenticated smtp

[Luca Fornasari]

-------- Original Message --------
Subject: authenticated smtp
From: Jan Vergeer <j_vergeer at hotmail.com>
To: kolab-users at kolab.org
Date: Tue Apr 01 2008 14:35:24 GMT+0800 (HKT)
> Hello,
>  
> I am using kolab server 2.2 RC1 and have a problem configuring 
> authenticated smtp.
> I want my email clients (eg outlook 2003) on the internet to be able 
> to send and receive email using the kolab server.
> Receiving mail works, but to for sending mails the client have to 
> authenticate before they can relay mail through the kolab server 
> (otherwise you get a relay access denied message). I have configured 
> the email clients to authenticate before sending mail using smtp.
>  
> The main.cf file of the kolab server contains the line:
> smtpd_sasl_authenticated_header = yes
> When running telnet to port 25 of the mail server and starting with 
> ehlo <domain>, I get the following response:
> 250-<domain>
> 250-PIPELINING
> 250-SIZE 20971520
> 250-ETRN
> 250-STARTTLS
> 250-ENHANCEDSTATUSCODES
> 250-8BITMIME
> 250 DSN
>  
> For smtp authentication to work, there should also be a "250 AUTH ....".
> And what I read on the internet that when you add the 
> "smtpd_sasl_authenticated_header = yes" line to the main.cf file, the 
> posfx daemon should display the AUTH header. Because this AUTH header 
> is not shown, the email client does not authenticate and sending mail 
> does not work.
>  
> Can someone help me to get this to work? Are there other things that 
> have to be enabled to get sasl to work?
> Thanks in advance
>  
> Greetings,
> Jan Vergeer

Hi Jan,

You should use TLS to be able to authenticate via SMTP.
Have a look at http://qmail.jms1.net/test-auth.shtml
It was written for qmail but works with any email server.
Just make sure your Outlook clients use TLS/SSL

Cheers,
Luca