[Mailman-Users] Another error - Services unavailable

[Dave Stern - Former Rocket Scientist]

> On Fri, 2003-02-28 at 03:36, Heather J. Lubinsky wrote:
> > Any idea why this would be happening?
> > I wonder if something is wrong with my server
> > Mailman 2.0.8 and Linux & apache
> > Heather
> >
> > Return-Path: <MAILER-DAEMON at pcosupport.org>
> > Received: from localhost (localhost)
> >  by pcosupport.org (8.11.6/8.11.6) id h1S8PlL06733;
> >  Fri, 28 Feb 2003 00:25:47 -0800
> > Date: Fri, 28 Feb 2003 00:25:47 -0800
> > From: Mail Delivery Subsystem <MAILER-DAEMON at pcosupport.org>
> > Message-Id: <200302280825.h1S8PlL06733 at pcosupport.org>
> > To: postmaster at pcosupport.org
> > MIME-Version: 1.0
> > Content-Type: multipart/report; report-type=delivery-status;
> >  boundary="h1S8PlL06733.1046420747/pcosupport.org"
> > Subject: Postmaster notify: see transcript for details
> > Auto-Submitted: auto-generated (postmaster-notification)
> > Status:
> >
> > This is a MIME-encapsulated message
> >
> > --h1S8PlL06733.1046420747/pcosupport.org
> >
> > The original message was received at Fri, 28 Feb 2003 00:25:47 -0800
> > from localhost
> > with id h1S8PlK06733
> >
> >    ----- The following addresses had permanent fatal errors -----
> > <pcos-admin at pcolist.org>
> >     (reason: 550 5.0.0 Access denied)
> >
> >    ----- Transcript of session follows -----
> > ... while talking to mail.pcolist.org.:
> > >>> MAIL From:<>
> > <<< 550 5.0.0 Access denied
> > 554 5.0.0 Service unavailable
> >

Another possibility is that sendmail was built with tcpwrap support and
thus sendmail is being restricted by tcpwrappers (/etc/hosts.{allow,deny}

Can the sender mconnect (telnet yourhost 25)?

 =-=-=-=-=-=-=-=-=-=-=-=-  generated by /dev/dave -=-=-=-=-=-=-=-=-=-=-=-=-=-=
 David Stern                                            University of Maryland
                Institute for Advanced Computer Studies