[4264] in testers
Another sendmail problem
daemon@ATHENA.MIT.EDU (James M. Kretchmar)
Wed Jun 23 10:14:56 1999
Message-Id: <199906231414.KAA04802@LUNAR-MODULE.MIT.EDU>
To: testers@MIT.EDU
Date: Wed, 23 Jun 1999 10:14:42 EDT
From: "James M. Kretchmar" <kretch@MIT.EDU>
This one is kind of amazing, although I haven't looked into why it's
happening yet. If you send mail to an Athena username at a host that
doesn't know anything about it, you get the following:
Jun 23 10:03:11 spatula-city.mit.edu sendmail[14173]: KAA14173: from=<kretch@MIT.EDU>, size=343, class=0, pri=30343, nrcpts=1, msgid=<199906231403.KAA04782@LUNAR-MODULE.MIT.EDU>, proto=SMTP, relay=SOUTH-STATION-ANNEX.MIT.EDU [18.72.1.2]
Jun 23 10:03:11 spatula-city.mit.edu sendmail[14174]: KAA14173: forward /mit/opuser/.forward: Group writable directory
Jun 23 10:03:11 spatula-city.mit.edu sendmail[14174]: KAA14173: to=<opuser@SPATULA-CITY.MIT.EDU>, delay=00:00:00, xdelay=00:00:00, mailer=local, stat=Sent
So for one thing, it seems to do a hesiod lookup on the username (I
had no idea sendmail would do that at all, let alone as the default
ForwardPath). Random proof of that:
LUNAR-MODULE.MIT.EDU:29521.null% expn marc@capcom
found cname: capcom.MIT.EDU continuing
220 spatula-city.mit.edu ESMTP Sendmail 8.9.3; Wed, 23 Jun 1999 10:04:17 -0400 (EDT)
250 spatula-city.mit.edu Hello LUNAR-MODULE.MIT.EDU [18.239.1.238], pleased to meet you
250 Marc Horowitz N1NZU <marc@spatula-city.mit.edu>
221 spatula-city.mit
More importantly sendmail bitbuckets the mail but considers it sent.
The mail doesn't get delivered anywhere locally, and there's no bounce
of course because it thinks the mail was delivered.
This doesn't work with non Athena usernames btw, mail to
woeifjwoeifj@capcom appropriatly generates a user unknown and a
bounce. Any vaild Athena username does do this though.
kretch
