Re: [gentoo-user] postfix - how to test [ot]

[Dan Farrell <dan@spore.ath.cx>]

On Fri, 1 Jun 2007 16:44:29 +0200
Hans-Werner Hilse <hilse@web.de> wrote:

> Hi,
> 
> On Fri, 01 Jun 2007 16:29:56 +0200 Johannes Skov Frandsen
> <joe@omesc.com> wrote:
> 
> > Well I guess I should have expected it to rather simple to test.
> > But I have never tried to configure a mailserver before
> > hence my somewhat naive question.
> > 
> > So what I did was to change my smtp server in thunderbird to use
> > localhost (with my postfix server running) and the send a
> > mail. This failed! Thunderbirds just claims that it could not
> > connect to the server...
> > 
> > I'm obvious doing something  really simple  completely wrong, but
> > what?
> 
> Start with telnet or even better netcat ("nc") and try connecting
> directly, e.g. "nc localhost smtp" (replace "nc" by "telnet" if you
> have that installed -- you might need to install one of the utilities,
> in that case, chose netcat).
> 
> The server should respond with 
> "220 <server's host name> ESMTP <product id>".
> 
> If not, check
> - whether "localhost" can be resolved (your /etc/hosts might be
> borked)
> - if there's a overly jealous firewall active, that doesn't allow this
>   traffic.
> 
> You can then try talking to your mail server directly (simple SMTP is
> fast to learn), e.g. enter
> 
> ---snip
> MAIL FROM: blah@blubb.org
> RCPT TO: myuser@mydomain.com
> DATA
> Subject: Test
> 
> this is a test.
> .
> QUIT
> ---snip
> (server will send replies not printed here)
> 
> Do the same coming from the outside, in order to make sure that those
> attempts are blocked. Otherwise you'll create an open relay and you'll
> be blocked very soon on several other hosts.
> 
> If you're not sure what is wrong, that might warrant a look into
> postfix' log files (below /var/log).
> 
> -hwh
That is so cool!!!  Worked for me, I use postfix on home relayhost as
well.  Let me know if you have more problems, sounds like we have about
the same config.  

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