postfix problem

Sat Mar 3 21:57:50 UTC 2007

Fernando and Peter,

Thanks a lot. 

> > [zbych at localhost zbych]$ telnet linuxfrontier.com 25
> > Trying 64.62.231.190...
> > Connected to linuxfrontier.com.
> > Escape character is '^]'.
> >
> > and thats it. Nothing more.
> >

That was the problem. And I silly did not look carefully enough to log files. 
There, in log files, I found out a direction to what should be done.

The mail server seems to be working now. I did receive messages from others 
directed to zbych-Ugr1wgFcK0yJYWAMoLK9qgC/G2K4zDHf at public.gmane.org and forwarded to softquake-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org

An interesting thing is, though, that I was not able to receive test messages 
send from home from softquake-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org to zbych-Ugr1wgFcK0yJYWAMoLK9ql+aB/EL+xL/@public.gmane.org They just 
disappeared. linuxfrontier.com was supposed to forward them to gmail.com.

I guess gmail just simply hates that sort of forwarding and ignored them 
completely. No any warnings, errors, nothing.

Thanks again. Now I know whom to ask for help with postfix :)

I have plans to install there a fully featured mail server, with spam and 
virus protection, access from the web to emails, pop and imap of course, good 
security. While all this is largely for my own enjoyment, I do it also for 
the possible use at the company I work for, in some near future.

zb.

On Friday 02 March 2007 10:48, Fernando Duran wrote:
> --- Zbigniew Koziol <softquake-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> wrote:
> > Again, searching on Google did not help so far. And
> > too many silly discussions
> > of the problem irritate me.
> >
> > The domain name is linuxfrontier.com . It is a new
> > server, not fully
> > configured. This is the first time I use Postfix,
> > but I think I will enjoy it
> > more than other mail servers.
> >
> > linuxfrontier.com does have an MX record.
> >
> > F..n Rogers that I use right now from home does not
> > allow me to telnet there
> > at port 25.
> >
> > I can however telnet to linuxfrontier.com at port 25
> > from another remote
> > machine. The result is, though, not the one I did
> > expect:
> >
> > [zbych at localhost zbych]$ telnet linuxfrontier.com 25
> > Trying 64.62.231.190...
> > Connected to linuxfrontier.com.
> > Escape character is '^]'.
> >
> > and thats it. Nothing more.
> >
> > SMTP is probably the the craziest protocol used on
> > the Internet. It is simple.
> > But so ambiguous. I guess that one can receive the
> > same error response in at
> > least 100 cases.
> >
> > In my case, when I send email to an existing user on
> > the server,
> > zbych-Ugr1wgFcK0yJYWAMoLK9qgC/G2K4zDHf at public.gmane.org from home, using google
> > smatp server, I get this
> > response:
> > ====
> > This is an automatically generated Delivery Status
> > Notification
> >
> > Delivery to the following recipient failed
> > permanently:
> >
> >      zbych-Ugr1wgFcK0yJYWAMoLK9qgC/G2K4zDHf at public.gmane.org
> >
> > Technical details of permanent failure:
> > PERM_FAILURE: SMTP Error (state 9): 554 5.7.1
> > <zbych-Ugr1wgFcK0yJYWAMoLK9qgC/G2K4zDHf at public.gmane.org>: Relay
> > access denied
> > ====
> >
> > zbych-Ugr1wgFcK0yJYWAMoLK9qgC/G2K4zDHf at public.gmane.org is supposed to be forwarded
> > back to
> > softquake-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org, the email address I am sending
> > from.
> >
> > I can send emails from inside of the server, by
> > using /usr/bin/mail .
> >
> > Pls. Or not.
> >
> > Regards,
> > zb.
>
> Hello zb,
>
> Some mail troubleshooting tips:
>
> Like Peter said, a good starting point is to isolate
> the problem:
>
> - check the MX record, you can use
> http://pingability.com/
>
> - check that is not a blocked port problem in your
> network by testing your smtp server with a web
> browser; you can use
> http://pingability.com/smtptest.jsp and
> http://pingability.com/mailtest.jsp or
> https://mail2web.com/
>
> - from your local pc after you do the "telnet
> your_server_ip 25" try "HELO localhost" and see if you
> get something back
>
> If your ISP blocks traffic on port 25 (I got Rogers
> and they do that), then you can have Postfix run on
> both 25 and some other port like 2525 (you don't want
> it to run on just 2525; you need 25 too) or use
> iptables to forward 2525 traffic to 25:
> iptables -t nat -I PREROUTING -p tcp --dport 2525 -j
> REDIRECT --to-port 25
>
> In your server:
>
> - check that Postfix is running and listening on 25:
> /etc/init.d/postfix status
> ps auxf|grep postfix
> netstat -talpn |grep 25
>
> - are you running besides a pop/imap server? you need
> one of those, like dovecot or courier. There's a
> Postfix/dovecot how-to at:
> http://rimuhosting.com/support/settingupemail.jsp?mta=postfix
> dovecot just needs a line in its config file that says
> you want to use it for pop3(/imap), you start it and
> it's good to go.
>
> - check your logs:/var/log/messages , /var/log/maillog
> for problems
>
>
> Once you can send/receive email at your account then
> you can look at the forwarding.
>
> Fernando
>
> ---------------------
> Fernando Duran
> http://www.fduran.com
>
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