From: Magnus Bäck (magnusdsek.lth.se)
Date: Sun Oct 01 2006 - 16:17:55 CDT

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On Sunday, October 01, 2006 at 23:02 CEST,
     mrk krm <mrk_0linuxmail.org> wrote:

> i followed the instructions on this manual
> http://workaround.org/articles/ispmail-sarge/ to install postfix in
> debian sarge. Everything seems to work, i can send and receive e-mail
> between localhost users/domains, but i can't send or receive outside
> (internet). My router has the port 25 open and my domain is
> subsolo.no-ip.org (dynamic dns).

You can't run a reliable SMTP service with a dynamic IP address.

> I look for configuration files and everything looks ok. Even my
> /etc/reolves.conf is ok. I run postfix chrooted, but the files
> needed are in the right directory.

Until Postfix is working, take it out of the chroot. Don't introduce
more complexity than needed.

> my log file reports this:
> > Sep 28 23:33:57 debian postfix/smtp[17578]: F2CCFA3755:
> > to=<mrk_0linuxmail.org>, relay=none, delay=57, >status=deferred
> > (Host or domain name not found. Name service error for
> > name=linuxmail.org type=MX: Host >not found, try again)
>
> what could be the error? I searched for 3 days and now i come here to
> ask your help.

Can you manually look up the MX record of linuxmail.org with e.g. dig(1)
or nslookup(1)?

Regarding receiving mail, how is your DNS set up? Can you connect to
port 25 from the outside. Etc. Be systematic, and do report "postconf -n"
output.

--
Magnus Bäck
magnusdsek.lth.se

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