sendmail: Operation timed out with

[Matthew Seaman]

On Tue, Mar 02, 2004 at 05:23:52PM -0500, Justin Brody wrote:
> Here's a bit from /var/log/maillog:
> Mar  2 16:40:39 aleph sendmail[327]: i1SGr1hh004059:
> to=<brody at math.umd.edu>, de
> lay=3+04:47:38, xdelay=00:00:00, mailer=esmtp, pri=8130413,
> relay=math.umd.edu.,
>  dsn=4.0.0, stat=Deferred: Operation timed out with math.umd.edu.
> Mar  2 16:40:39 aleph sendmail[327]: i1S4wehh000450:
> to=<brody at math.umd.edu>, ctladdr=<justin at aleph.none.org> (1001/1001), delay=3+16:41:59,
> xdelay=00:00:00, mailer=esmtp, pri=10290322, relay=math.umd.edu., dsn=4.0.0, stat=Deferred:
> Operation timed out with math.umd.edu.
> 
> Don't know if that says anything new.  I would wonder if it's some sort of
> lookup based on "ctladdr", but I get the same error if use "-f
> brody at math.umd.edu" which does show up in that field.
> 
> 
> sendmail -q -v reports:
> 
> aleph# sendmail -q -v
> 
> Running /var/spool/mqueue/i22M7pof000364 (sequence 1 of 17)
> <brody at math.umd.edu>... Connecting to math.umd.edu. via esmtp...
> <brody at math.umd.edu>... Deferred: Operation timed out with math.umd.edu.
> 
> Running /var/spool/mqueue/i22KDkof000227 (sequence 2 of 17)
> <jdbrody at wam.umd.edu>... Connecting to po1.wam.umd.edu. via esmtp..
> <jdbrody at wam.umd.edu>... Connecting to po2.wam.umd.edu. via esmtp...
> <jdbrody at wam.umd.edu>... Connecting to po0.wam.umd.edu. via esmtp...
> <jdbrody at wam.umd.edu>... Deferred: Operation timed out with po0.wam.umd.edu.
> 
> etc...

Bah! All that says is connection timeout. No indication of *why*.
You're not even getting the SMTP banner there.  I suspect it's
probably something to do with an administrative descision on behalf of
UMD admins -- perhaps they reject connections to hosts in DUL block
lists.
 
> I'll give a shot at changing my domain name - what should I use?  I'm a
> bit too poor to actually buy one :)  Should I just change to use my ISP's
> domain?

Yes -- do a reverse lookup on your IP number and use that name in your
sendmail config.  It may not look pretty, but it should let you see if
that is the problem.

The other thing to do is forward all of your e-mail via your ISP's
smart host.  As you are probably expected to do.

	Cheers,

	Matthew

-- 
Dr Matthew J Seaman MA, D.Phil.                       26 The Paddocks
                                                      Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey         Marlow
Tel: +44 1628 476614                                  Bucks., SL7 1TH UK
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