bounces to root

[Raphael Langerhorst]

On Monday 12 December 2005 11:22 Raphael Langerhorst wrote:
> On Monday 12 December 2005 08:00, Raphael Langerhorst wrote:
> > On Monday 12 December 2005 07:52, Raphael Langerhorst wrote:
> > > Hi all,
> > >
> > > I have an issue with "Undelivered Mail Returned to Sender" bounces to
> > > root at kolab.my.domain which have an empty sender field. These happen
> > > repeatedly (every 2-5 minutes) after a mail has been sent - sending
> > > works actually, the mail is received at the other end.
> > >
> > > The setup currently looks like the following:
> > > kolab is configured to send mail to the internet, but the MX record of
> > > the domain is still set to a different machine - so this might be an
> > > issue for "delivery reports" of the mail system in general(??).
> > >
> > > Attached is the log. Do you know where these "bounces" come from? Any
> > > solution?
> > >
> > > Thanks a lot!
> >
> > ... here is some more info:
> > we are using Kolab2 2.0.1 (with first security update) on FreeBSD
> > 5.4/i386
> >
> > Regards,
> > Raphael
>
> Problem solved.
>
> The Problem:
> FreeBSD by default sends out report emails for daily/weekly/... cron job
> results. These emails are, according to /etc/aliases sent to the user
> "root". Since Kolab2 is running an SMTP server on port 25, this SMTP server
> is used. And because Kolab2 (this one here at least) has configured a
> smart/relayhost the email ends up being sent to that smart/relayhost
> because kolab2 does not detect the domain to be its own - since the host
> name itself (kolab) is as well included.
>
> The solution:
> rather simple, just edit /etc/aliases and set a reasonable alias for the
> root user (first alias, commented out by default). After that, you have to
> run /usr/bin/newaliases  (NOT /kolab/sbin/newaliases)
>
> It might take a couple of minutes (or even half an hour) until all changes
> have taken effect (for example if leftover mails with a wrong header are
> still around).

Well, almost. Apparently root at kolab.my.domain still got sent... so the simple 
and save solution was to move /usr/sbin/sendmail out of the way. I would be 
interested in a cleaner solution though.

>
> Regards,
> --
> Raphael Langerhorst
> http://raphael.g-system.at/blog