Re: Exim changes
On Tue, Jun 13, 2000 at 02:24:58PM +0930, Mark Phillips wrote
> John Pearson [huiac@camtech.net.au] wrote:
>
> > It could be that mail.infoeng.flinders.edu.au and
> > adam.ist.flinders.edu.au are the same machine, and it's simply
> > using the canonical name in your logs. This would be fairly
> > normal if they are arranging a transition from one to the other:
> > both would work until they decide to drop the old name.
> >
> > Try the following three things:
> > $ host adam.ist.flinders.edu.au
>
> adam.ist.flinders.edu.au A 129.96.1.21
>
> > and
> > $ host mail.infoeng.flinders.edu.au
>
> mail.infoeng.flinders.edu.au CNAME adam.ist.flinders.edu.au
> adam.ist.flinders.edu.au A 129.96.1.21
>
> > to see if they are, in fact, the same machine, and
>
> It seems they are.
>
> > $ /usr/sbin/exim -bt mark@ist.flinders.edu.au
> > to confirm how exim thinks it should be routed.
>
> mark@ist.flinders.edu.au
> deliver to mark@ist.flinders.edu.au
> router = smarthost, transport = remote_smtp
> host adam.ist.flinders.edu.au [129.96.1.21]
>
> So does this mean that it is routing to adam directly, or via
> "mail.infoeng"? How can you tell?
>
No via about it. They are the same machine; the only difference is
in the name that you use to refer to it. It's likely that exim
is simply using the canonical name in the logs.
> The other thing I still don't understand, is how mail can be delivered
> even though the exim daemon is not running (ie "/etc/init.d/exim stop"
> has been run). Because I tried this, and mail still seems to be
> delivered outside.
>
Probably, your mail program is sending mail directly by passing
messages to /usr/sbin/sendmail on STDIN. This should be a
symlink to exim (or whatever MTA you're using). The exim daemon
is responsible for accepting incoming SMTP connections, and for
running the mail queue. If your message is sent by invoking
/usr/sbin/sendmail then it may be delivered directly and never
end up in the queue, and so get where it's going whether the
exim daemon is runing or not; it depends on how exim is
configured.
Could be, everything's working OK :-)
Bye for now,
John P.
--
huiac@camtech.net.au
john@huiac.apana.org.au
http://www.mdt.net.au/~john Debian Linux admin & support:technical services
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