E-mail/DNS quuestion

[n1hlk at n1hlk.ne.mediaone.net (Keith Triplett)]

Have done some test on this problem.
Even with the thought that our boxes was sending mail to the outside
of mediaone's network mail server (mail not from mediaone users)
and that might resolved the problem by sending the mail to
smtp.ne.mediaone.net. Well that did not work.

I got the errors from 7 different mail servers (not just chmls19)
Sample...
... while talking to ndmls01.mediaone.net.:
 >>> RCPT To:<n1hlk at mediaone.net>
<<< 501 5.1.8 <n1hlk at mediaone.net>... Domain of sender address 
n1hlk at n1hlk.ne.mediaone.net does not exist

I know that I will call Mediaone on Monday about this.
Keith

At 08:41 PM 12/17/00, Patrick McManus wrote:
>there's some kind of split DNS going on.. chmls19 is running
>a recursive (and open!) dns server.. no doubt for caching
>purposes.. assuming that it's using itself as a stub resolver, which
>makes sense but is not in anyway required, that's the problem..
>
>this feels accidental.. one potential setup is that the config file
>on chmls19 declares itself authoritative for mediaone, but doesn't
>have the individual user hosts in it.. (and cause it's authoritative
>it doesn't follow the recursive rules).. nobody else of course
>declares knows of this self-designation so the err isn't propogated
>beyond machines that use it as a stub resolver (maybe just itself..)
>
>here's the split:
>
>/home/mcmanus>nslookup www.apple.com chmls19.mediaone.net
>Server:  chmls19.mediaone.net
>Address:  24.147.1.154
>
>Non-authoritative answer:
>Name:    www.apple.com
>Address:  17.254.0.91
>
>confirms that chmls19 has a dns resolver on it...
>
>/home/mcmanus>nslookup gaf.ne.mediaone.net chmls19.mediaone.net
>Server:  chmls19.mediaone.net
>Address:  24.147.1.154
>
>*** chmls19.mediaone.net can't find gaf.ne.mediaone.net: 
>Non-existent   host/domain
>
>confirms that chmls19 has never heard of gaf.ne
>
>/home/mcmanus>nslookup gaf.ne.mediaone.net 192.168.16.1
>Server:  liberty.atc-bos.com
>Address:  192.168.16.1
>
>Non-authoritative answer:
>Name:    gaf.ne.mediaone.net
>Address:  24.128.28.209
>
>confirms that gaf.ne is in global dns..
>
>
>
>
>
>
>[Jerry Feldman: Sat, Dec 16, 2000 at 10:37:18AM -0500]
> > This is not quite a Linux question, but  since last Tuesday, I have been
> > unable to send email directly from my Linux box to any mediaone address.
> >
> > The message I get bounced back from mediaone servers is:
> > Final-Recipient: RFC822; gaf at mediaone.net
> > Action: failed
> > Status: 5.5.0
> > Remote-MTA: DNS; chmls19.mediaone.net
> > Diagnostic-Code: SMTP; 501 5.1.8 <gaf at mediaone.net>... Domain of sender
> > address gaf at gaf.ne.mediaone.net does not exist
> > Last-Attempt-Date: Sat, 16 Dec 2000 10:06:34 -0500
> >
> > I can send successfully to virtually every other address.
> > gaf.ne.mediaone.net is properly configured by the mediaone DNS services.
> >
> > I do run a Linksys BEFSR41 Cable Modem/Router with port 25 open.
> >
> > My sendmail.cf file has not changed since September. There are several
> > other people on this list who have a similar configuration that I have:
> >
> > linux-->sendmail--->Cable Modem/Router--->Cable Modem
> >
> >
> >
> > --
> > Jerry Feldman <gaf at blu.org>
> > Boston Linux and Unix user group
> > http://www.blu.org
> >


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