Exchange 2010 - Mail isuse
yesterday Exchange decided not to accept incoming messages (from www) and internally, messages are just sitting in the queue.
Looking at the messages in the queue, the error column has 250.2.0.0 OK in it next to messages!?!
Also I have asked our spam filtering poeple if they can see anything and they sent me the following info:
Jun 7 17:50:00 spamwall/smtp: 2BFB7250E83: to=<firstname.lastname@example.org>, relay=18.104.22.168[22.214.171.124], delay=9383, status=deferred (host 126.96.36.199[188.8.131.52] refused to talk to me: 421 The server has reached the maximum number of threads allowed)
We had a similar issue about 6 weeks ago that was down to an an issue with AV but after replicating the fix, AV doesn't appear to be the problem now!
Anyone any ideas.
Thanks in antisipation.