Within an hour of making this post I received a call from a very helpful
engineer at Earthlink. The problem has been identified and a resolution
is in the works.
Mike
Mike Lewinski wrote:
One of our mail servers can't talk to any of the earthlink MX servers
and after two weeks of trying I've got a queue full of undeliverable
mail to their subs.
Previous attempts at getting help via postmas...@earthlink.net are
unanswered. INOC-DBA has no directory entry for them. This old NANOG
post (http://www.merit.edu/mail.archives/nanog/msg01582.html) has a
valid phone number but invalid extension. So I hit 0 and got a tech
anyway. That tech instructed me to forward on my concerns to
blockedbyearthl...@abuse.earthlink.net which I did, but nothing more
than an auto-response has come back a week later now (and yes, I
followed the instructions in the auto-responder and re-submitted in the
requested format).
Everything I've read indicates that if we are being blocked deliberately
I should be getting a 550 SMTP error back. We do not even get a SYN/ACK
back (nor ICMP unreachable/prohibited, nor RST) so no SMTP errors are
generated from their servers. The MX are all pingable and traceable, so
its not a routing problem AFAICT.
The mailman server here has paranoid rDNS setup, does not appear on any
blacklists, and has never been the subject of any spam complaints. It
runs a listserv for a professional legal association which charges
members a fee before they are allowed to join the list, so the
possibility of unwanted third parties being subscribed is very near zero.
TIA and sorry for the noise. We tried having an Earthlink subscriber
work this from the other angle. All she got was "Earthlink has been
blocking port 25 for years you should now this by now!"
Mike Lewinski
--
m...@rockynet.com
POTS: 303-629-2860
INOC-DBA: 13345*mjl
