Note: I am using exim v 4.43
One of our clients just upgraded their mailsystem, which completely
broke our ablility to send mail
Last week everything was getting stuck in the queue
They did something to try and fix it this week, and now we get "Mail
delivery failed: returning message to sender" all the time:
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es)
failed:
localpart@???
retry time not reached for any host after a long failure period
I think that alone might be because of some internal exim clock related
to timeout from extended failures, because their system was broken for
a week
The situation kind of reminds me of the verizon issue a few months ago,
when they changed their system.
I do have these two lines in my /usr/exim/configure for the verizon
callout fix of a few months back:
rfc1413_hosts =
!206.46.232.0/24:208.38.61.228
rfc1413_query_timeout = 10s
And where does TLS fit in?
I noticed a starttls error in one of the logs. Oddly though, I don't
remember setting exim to speak via tls to MTAs - just MUAs
anyways, i tried telnetting into the foregin server
220 SMTP Proxy Server Ready
EHLO
501 Syntax error in command parameter(s) Domain name expected
EHLO mobwire.com
250-uscorcit01.us.loreal.com ESMTP Server Ready
250-SIZE 31457280
250-STARTTLS
250-TLS
250 DSN
STARTTLS
Connection closed by foreign host.
That struck me as odd -- shouldn't i get a
220 TLS go ahead
off of that response?
It seems that they're advertising something that they're not supporting.