RE: problems receiving e-mail to my server redux
From: Ed McCorduck (Ed.McCorduck_at_Cortland.edu)
Date: 07/14/04
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Date: Wed, 14 Jul 2004 06:09:51 -0400 To: <lists-redhat-replies@listmail.innovate.net>
Thanks so much for your reply. At the risk of cluttering up the list
(another newbie _faux pas_ that I hope you'll all forgive me for), let
me repeat here what I just replied to Ed Greshko:
I installed BIND on my Linux box and set it up to start at every
boot-up, so I assumed this would take care of my DNS/nameserver setup.
One of the bases for that belief is this passage from Peter Harrison's
book _Linux Home Networking II_: "BIND is an acronym for the 'Berkeley
Internet Name Domain' project which MAINTAINS THE DNS RELATED SOFTWARE
SUITE THAT RUNS UNDER LINUX [emphasis mine]. The most well known program
in BIND is 'named', the daemon THAT RESPONDS TO DNS QUERIES FROM REMOTE
MACHINES [emphasis mine again]" (p. 59). Granted, Harrison's book is
full of other details and configurations I must still perform regarding
the files that named uses, but this snippet certainly makes it all sound
simple enough for a fool like me to think I could do it all on my own.
I'd appreciate your further thoughts on this, and thanks again for your
reply.
Ed McCorduck
Department of English
State University of New York College at Cortland
http://mccorduck.cortland.edu
ICQ: http://mccorduck.cortland.edu/pager
AIM: EdMcCorduck
> -----Original Message-----
> From: lists-redhat-replies@listmail.innovate.net
> [mailto:lists-redhat-replies@listmail.innovate.net]
> Sent: Sunday, July 11, 2004 6:37 AM
> To: Ed McCorduck
> Subject: RE: problems receiving e-mail to my server redux
>
>
> while you may now be forwarding port 53, it doesn't look like you
> have a dns server running on your machine. since you list your
> machine as the authoritative nameserver for your domain you have to
> run a dns server if you want things to work.
>
> related, in the whois records you have:
>
> mccorduck.ws ........ 24.24.15.155:80
>
> which implies that you are trying to use port 80 for your dns server.
> this simply won't work. [i believe that the spurious :80 gets
> ignored, as it should, when this information gets put into the root
> servers.]
>
>
>
> ---------- Original Message ----------
> > From: Ed McCorduck <Ed.McCorduck@Cortland.edu>
> > To: General Red Hat Linux discussion list <redhat-list@redhat.com>
> > Date: Sunday, July 11, 2004 06:20:00 AM -0400
> > Subject: RE: problems receiving e-mail to my server redux
> >
> >> -----Original Message-----
> >> From: redhat-list-bounces@redhat.com
> >> [mailto:redhat-list-bounces@redhat.com] On Behalf Of Cowles, Steve
> >> Sent: Thursday, July 08, 2004 6:24 PM
> >> To: 'General Red Hat Linux discussion list'
> >> Subject: RE: problems receiving e-mail to my server redux
> >>
> >>
> >> Ed McCorduck wrote:
> >> >
> >> > Thanks for your very detailed reply, Steve. I'll try to
> dig through
> >> > your mine of information as best as I am able, but
> >> unfortunately it's
> >> > mostly way over my head at the present state of my newbie
> >> > knowledge.
> >>
> >> Ed,
> >>
> >> In short...
> >>
> >> 1) Your domain regsitration seems to be correct. i.e. The
> recursion
> >> from the root servers back to your name server is working.
> >>
> >> 2) Whats not working are queries to your name server;
> which is listed
> >> at 24.24.15.155. Is this the public IP address for your firewall?
> >
> > For my home network, yes. It's the static IP address
> assigned to me by
> > my ISP, to which I am connected by a cable modem. The cable goes
> > through my router, where the firewall is.
> >
> >
> >> 3) The reply I got back from the above IP address was an ICMP port
> >> unreachable. This is usually caused by your firewall not being
> >> properly configured for NAT'ing (port forwarding) to an internal
> >> RFC1918 address. In your case, 192.168.1.101
> >>
> >> > At least I understand one of your questions, though, and
> perhaps my
> >> > answer can shed more light on the problem:
> >> >
> >> >> BTW: Is 192.168.1.101 possibly a host behind your firewall???
> >> >
> >> > Yes, 192.168.1.101 is the IP address that I maintain for
> my Linux
> >> > computer, which houses my Web and e-mail (sendmail) servers. My
> >> > firewall, which is an integral part of my Linksys router
> >> for my home
> >> > network, I set up through Port Forwarding to send all port
> >> 25, 80 and
> >> > 110 queries to this computer.
> >>
> >> As I suspected. Please note that DNS queries require udp
> and tcp port
> >> 53 to be port forwarded. You don't mention these ports above.
> >
> > O.K., I hadn't set port 53 to be forwarded to 192.168.1.101, but I
> > changed that but still any e-mail sent to me is bouncing. BTW, by
> > saying "these ports" in your question above, did you mean
> that there's
> > a separate port number for udp? All I saw on my router's
> configuration
> > screen was that port 53 was for "DNS."
> >
> >
> > Ed McCorduck
> > Department of English
> > 117-A Old Main
> > 753-2093
> > http://mccorduck.cortland.edu
> > ICQ: http://mccorduck.cortland.edu/pager
> > AIM: EdMcCorduck
> >
> >
> > --
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> >
>
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