Why not UUNet too? (was Re: first Yahoo, now RoadRunner?)

Fri Oct 10 17:00:53 UTC 2003

Since the topic is mysterious rejections from MTAs, I have one from
UUNet. One of our business partners has UUNet for an ISP and is using
UUNet for a tertiary MTA. Occasionally, mail ends up going to that MTA
(quite often actually, their primary gets unresponsive from time to time
and I've _never_ actually been able to reach the secondary) and gets
bounced at the "MAIL FROM:",

  $ telnet relay.eu.mail.uu.net 25
  Trying 199.171.54.122...
  telnet: connect to address 199.171.54.122: Connection refused
  Trying 199.171.54.202...
  telnet: connect to address 199.171.54.202: Operation timed out
  Trying 199.171.54.203...
  telnet: connect to address 199.171.54.203: Operation timed out
  Trying 199.171.54.245...
  Connected to relay.eu.mail.uu.net.
  Escape character is '^]'.
  220 mr0.ash.ops.us.uu.net ESMTP Please see http://www.worldcom.com/global/terms/a_u_p/ for Acceptable Use Policy
  HELO gibraltar.globalstar.com
  250 mr0.ash.ops.us.uu.net Hello gibraltar.globalstar.com [207.88.248.142], pleased to meet you
  MAIL FROM:<cclark at globalstar.com>
  550 no
  QUIT
  221 mr0.ash.ops.us.uu.net closing connection
  Connection closed by foreign host.

Quite a helpful error message there, "550 no." (That's not even to mention
the addresses that time out or aren't listening on 25/tcp. I see seven A
records for that domain name.)

Has anyone out there an idea of why UUNet does not like our domain? I would
_guess_ the problem might be some weird spam filter, but AFAIK, our domain
and IP space is damn clean WRT spam. The AUP link is not any help.
-- 
Crist J. Clark                               crist.clark at globalstar.com
Globalstar Communications                                (408) 933-4387