Hi All,
Good news. Disabling TLS on the mta has resolved the issue completely.
There isn't any idle time on the connections any more and I've observed
a previously affected server (unable to deliver a message to us for a
couple of days) send through on its first retry attempt.
I'm not sure wha
Further to this, I've finally managed to capture the communication
between ASSP and Exim with tcpdump. Unfortunately I forgot to disable
SSL so I can't see the actual SMTP commands but I can see the behaviour.
ASSP Takes a total of 1.9 seconds to send the message to Exim. The last
packet is an
