Hi,I am looking to track where delays are occuring in emails from external client. However this does not always happen for all mail. We use a third party supplier for spam and anti virus and I have a support request raised with them. I am trying to work out averages and what to know how best I can do this. At the moment I am looking at message headers and using the tracking tool on our exchange server which is very manual.One aspect of our business relies on heavily on email. Emails usually do not contain attachments. Our exchange server can be a bit sluggish at times but nothing substancial since we upgraded the memory. Some emails are not reaching users until 40 - 50 minutes after the sender sent them - which is too long according to our users. So I dont know where to begin.TS GURU

I think you are starting in the right places. Message Tracking and checking the internet headers is a good start. That will tell you where the delay is- which hop is the message is stuck on.You may also want to enable SMTP protocol logging to get more detailed information. How do that depends on your Exchange Version:Exch 2003:http://support.microsoft.com/kb/821910How to troubleshoot for Exchange Server 2003 transport issues - Protocol Logging is a subsectionExch 2007:http://technet.microsoft.com/en-us/library/bb124531.aspxHow to Configure Protocol Logging

Hello Metallicabk, Yes, please use message tracking and message header to see the issue happen in which phase, and troubleshoot the problem correspondingly. At the same time, I have couples of questions: 1. What's your Exchange version? 2. It only happen from inbound emails, right? Do it happen on some specific domains? For troubleshooting, I suggest you run EXBPA to do a health check and see if there is related information in event log. If necessary, for example, we know it happen on store action of Exchange, raise store related log level and check the event. Thanks, Elvis

Hello Elvis,Its exchange 2003 and yes it's only on inbound emails and does appear to be only one of our domains. They are reliant upon accurate delivery as this generates sales.TS GURU

Hi Metalicabk, As I mentioned before, please use message tracking and message header to determine the problem happen in which phase(for example, it takes 30 minutes from your front end server to your back end server). Please also run Exbpa and check your event log for related information. Please also add the domain to your IP allow list and test the issue. Thanks, Elvis