Date: Tue, 2 Mar 2004 18:58:31 -0500 (EST) From: Justin Brody <brody@math.umd.edu> To: Matthew Seaman <m.seaman@infracaninophile.co.uk> Cc: freebsd-questions@freebsd.org Subject: Re: sendmail: Operation timed out with Message-ID: <Pine.GSO.4.58.0403021854110.3965@archimedes.math.umd.edu> In-Reply-To: <20040302223734.GA81585@happy-idiot-talk.infracaninophile.co.uk> References: <Pine.GSO.4.58.0403021510220.2784@archimedes.math.umd.edu> <20040302205759.GB21233@happy-idiot-talk.infracaninophile.co.uk> <Pine.GSO.4.58.0403021706410.2784@archimedes.math.umd.edu> <20040302223734.GA81585@happy-idiot-talk.infracaninophile.co.uk>
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Well, I tried forwarding to my "Smart relay host" and get the same error
message, with "via relay..." appended. On the other hand, a reverse DNS
lookup doesn't work - perhaps this is my entire problem? I'm not sure how
to fix it if so!
Here's some output:
aleph# ifconfig rl0
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::2e0:4cff:fe98:36fa%rl0 prefixlen 64 scopeid 0x1
inet 192.168.0.197 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:e0:4c:98:36:fa
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
aleph# nslookup 192.168.0.197
Server: ns1.dc.cox.net
Address: 68.100.16.30
*** ns1.dc.cox.net can't find 192.168.0.197: Non-existent host/domain
aleph# cat /etc/resolv.conf
search dc.dc.cox.net
nameserver 68.100.16.30
nameserver 68.100.16.25
I do have an entry in my /etc/hosts file:
192.168.0.197 aleph.cox.net aleph
But apparently it's not reading that. [the change to cox.net is just 5
minutes old, BTW].
Thanks again for the help!
On Tue, 2 Mar 2004, Matthew Seaman wrote:
> 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@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@math.umd.edu>, ctladdr=<justin@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@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@math.umd.edu>... Connecting to math.umd.edu. via esmtp...
> > <brody@math.umd.edu>... Deferred: Operation timed out with math.umd.edu.
> >
> > Running /var/spool/mqueue/i22KDkof000227 (sequence 2 of 17)
> > <jdbrody@wam.umd.edu>... Connecting to po1.wam.umd.edu. via esmtp..
> > <jdbrody@wam.umd.edu>... Connecting to po2.wam.umd.edu. via esmtp...
> > <jdbrody@wam.umd.edu>... Connecting to po0.wam.umd.edu. via esmtp...
> > <jdbrody@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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