On Wed 17 Aug 2016 at 18:44:59 -0400, Jeffrey Mark Siskind wrote: [...Quite a bit of snipping of very useful information].
> I just changed /etc/mailname on all of my machines to contain: > > qobi@upplysingaoflun>cat /etc/mailname > purdue.edu You know it makes sense to do this. :) > qobi@upplysingaoflun>ls -l /etc/mailname > -rw-r--r-- 1 root root 11 Aug 17 18:08 /etc/mailname > qobi@upplysingaoflun> > > It does not deliver mail that is addressed to either qobi or root without @... But it does qualify a bare qobi or root correctly. > The enclosed may help. I don't know how to interpret them. They come from > procmail on dynamo.ecn.purdue.edu, a machine that I don't maintain. > > Jeff (http://engineering.purdue.edu/~qobi) > ------------------------------------------------------------------------------- > From mailer-dae...@ecn.purdue.edu Wed Aug 17 18:10:20 2016 > Return-Path: <mailer-dae...@ecn.purdue.edu> > Received: from mx05.ecn.purdue.edu (mx05.ecn.purdue.edu [128.46.4.13]) > by dynamo.ecn.purdue.edu (8.14.4/8.14.4) with ESMTP id u7HMAKUs029433 > (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 > verify=NOT) > for <q...@dynamo.ecn.purdue.edu>; Wed, 17 Aug 2016 18:10:20 -0400 > Received: from mailhub180.itcs.purdue.edu (mailhub180.itcs.purdue.edu > [128.210.5.180]) > by mx05.ecn.purdue.edu (8.14.4/8.14.4) with ESMTP id u7HMAJFV019693 > (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) > for <q...@ecn.purdue.edu>; Wed, 17 Aug 2016 18:10:19 -0400 > Received: from mailhub130.itcs.purdue.edu (mailhub130.itcs.purdue.edu > [128.210.5.130]) > by mailhub180.itcs.purdue.edu (8.14.4/8.14.4/spamscan) with ESMTP id > u7HMAJYX008224 > for <q...@purdue.edu>; Wed, 17 Aug 2016 18:10:19 -0400 > Received: from smtp.ecn.purdue.edu (mx05.ecn.purdue.edu [128.46.4.13]) > by mailhub130.itcs.purdue.edu (8.14.4/8.14.4/mta.smtp.purdue.edu) with > ESMTP id u7HMAIWv018160 > (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) > for <q...@purdue.edu>; Wed, 17 Aug 2016 18:10:19 -0400 qobi has been qualified by Exim. The mail is accepted and makes its way to dynamo.ecn.purdue.edu. > From: Mail Delivery Subsystem <mailer-dae...@ecn.purdue.edu> And then gets rejected :( [...Snip...] for this reason: > ----- The following addresses had permanent fatal errors ----- > <q...@upplysingaoflun.ecn.purdue.edu> > > ----- Transcript of session follows ----- > 554 5.0.0 MX list for upplysingaoflun.ecn.purdue.edu. points back to > smtp.ecn.purdue.edu > 554 5.3.5 Local configuration error A mail loop, if I am not mistaken. My thoughts would now be turning to a server misconfiguration. [...A big snip...] Let's try to pin this down and determine whether Exim plays a part. brian@desktop:~$ telnet smtp.ecn.purdue.edu 25 Trying 128.46.177.5... Connected to smtp.ecn.purdue.edu. Escape character is '^]'. 220 smtp.ecn.purdue.edu ESMTP Sendmail 8.14.4/8.14.4; Thu, 18 Aug 2016 08:04:08 -0400 ehlo example.com 250-smtp.ecn.purdue.edu Hello copernicus.demon.co.uk [80.177.21.246], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 314572800 250-DSN 250-ETRN 250-STARTTLS 250-DELIVERBY 250 HELP mail from:br...@example.com 530 5.7.0 Authentication required You'll be able get further than me and see how the server handles rcpt to:q...@purdue.edu.