Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!news.cs.indiana.edu!ux1.cso.uiuc.edu!TheImprov!amys
From: amys@TheImprov.ncsa.uiuc.edu (Amy Swanson)
Newsgroups: comp.sys.sgi
Subject: Re: Mail Problem
Message-ID: <1991Apr26.172636.4174@ux1.cso.uiuc.edu>
Date: 26 Apr 91 17:26:36 GMT
References: <9104251250.AA15634@eddie.ee.vt.edu>
Sender: usenet@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 46

marc@EDDIE.EE.VT.EDU (Marc Friedman) writes:

<stuff about Elm deleted>
>.... Now whenever
>mail is sent to this machine (hostname: rainbow), I get the
>following returned mail:

> 
>From: MAILER-DAEMON@rainbow.mitre.org (Mail Delivery Subsystem)
>Subject: Returned mail: Service unavailable
>Message-Id: <9104251211.AA01660@rainbow>
>To: <marc@eddie.ee.vt.edu>
>Status: RO

>   ----- Transcript of session follows -----
>>>> HELO rainbow
><<< 553 rainbow I refuse to talk to myself
>554 <marc@rainbow.mitre.org>... Service unavailable

>   ----- Unsent message follows -----
>*** Stuff deleted ***


I've been getting the same problem on systems that I've started running
DNS on.  Typically our systems run both YP/NIS and DNS, but on systems 
without the YP/NIS (NFS) option and running just DNS, a few days after
setting up DNS, the mailer stops delivering mail to that system - same
exact error.  When I remove DNS (wipe out the /usr/etc/resolv.conf file)
and restart mail, everything's fine.  So, I don't have an answer, but I'd
like to see if someone knows what's going on.

(just for information, the systems running DNS are looking to a Sun as the
 "master" nameserver - I just create the /usr/etc/resolv.conf file and DNS
 works!)


Amy


========
Amy K. Swanson
SGI Systems Administrator
NCSA - National Center for Supercomputing Applications
University of Illinois @ Urbana-Champaign

amys@ncsa.uiuc.edu