One of our users sent a large (about 10MB) e-mail to Yahoo. Yahoo has
not been accepting it, they don't give a reason, they just disconnect
after getting the whole message:
------------------------------------------------------------------------
Jun 9 13:20:50 hobbes postfix/smtp[7398]: 02EB432E022: lost connection
with e.mx.mail.yahoo.com[67.195.168.230] while sending end of data --
message may be sent more than once
------------------------------------------------------------------------
Small messages make it through without a problem, and sending the same
message from a Gmail account works.
I've tried messing with MTU size (down to 950 from 1500), various
sysctl settings, DKIM signing and probably a few things I'm forgetting
about: to no avail.
The best I can find is this post:
http://article.gmane.org/gmane.mail.postfix.user/208435
But there's no resolution.
Can anyone suggest other things to try or other information to gather
so I can figure out what's wrong with my setup or what's wrong with
Yahoo (and how to work around it)?
Thanks.
-- Philippe Chaintreuil
