Want help with IIS SMTP Service? Please enable logging.
When you trying to troubleshoot SMTP delivery issues and using Microsoft IIS
SMTP Service. One tip, the logging is not enabled by default. I'm
not sure why, but it can provide a ton of great information. Pictures are
worth a thousands words. It can be done in three easy steps using IIS
manager. So the next time you have mail delivery issues, enable logging,
send some test emails and see what is logged. Notepad is a required tool
for viewing them. You can even use Logparser to
query the files. FINDSTR is my favorite quickie tool to locate
information. Impress yourself and your admin with this information
the next time you have mail delivery issues.
Note: SMTP Logging is not enabled by default.
Note: If you are installing windows 2008, view this article.
Step 1 - Enable logging

Step 2 - this shows where the logs are located

Step 3 - Enable all fields so the maximum amount of information is
logged
