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Re: can't send/receive e-mail to internet

From: Wietse Venema (wietseporcupine.org)
Date: Sun Oct 01 2006 - 16:13:47 CDT


mrk krm:
> Hi everybody,
>
> 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).
>
> 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.
>
> 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.
> thank you a lot.
>

1) See line 10 of the welcome message, repeated below.
2) Test if you as an unprivileged user can do the MX lookup.
3) See http://www.postfix.org/DEBUG_README.html#no_chroot
4) See http://www.postfix.org/faq.html#dns-again

        Wietse

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