Hi, We are running Exchange 2003 SP2. We have a connector which sends all mail immediately to a third party service which checks incoming and outgoing mail for virus' and spam. Every so often I get these emails: <server>has reported a Warning. Reported status is: Queues - Warning Drives - Unknown Services - OK Memory - Unknown CPU - Unknown This from the default monitoring setup. If I go into ESM and look at the queues I can see messages there that are occasionally 30 minutes old... If I watch it and refresh the view eventually they all go... Is there anyway I can see what is going on and why they are sat there... I have a feeling that the third party service may be sendingdelay messages to our serverbut I am not sure how to verify this? Thanks

Hi, You could try to enable SMTP logging to see if that tells you whats happening Leif

Hi, Which queue did the message hang? And please also improve the services level inthe Diagnostics Loggingto maximum, then check the event log. Thanks Allen

Hi, Messages are sitting in the External connector SMTP queue. I have never had to remove a message from this queue, they all go eventually... I have turned the logging for SMTP and Queueing Engine under the MSExchangeTransport to max and I shall report back when it occurs again. Thanks everyone for your replies.

OK... I have enabled the logging as per above but it does not appear to be logging anything? I have tried restarting the cluster SMTP resource and restarting it... What do I need to do to get it to log? Thanks

You can try to enable Logging on the SMTP Virtual Server. Also you can use perfmon to track smtp server Perfomance counters, Remote Queue Length Message Send Retries Connection errors/sec also try to telnet the smtp host that you relay your messages to port 25 and check response time (the time that you recieve the 220 response) Last resort will be to use Netmon 3.2 (yeah it rocks!) to capture smtp traffic and anylize. Regards, Paul