In my prior post I mentioned that the logging information was misleading and only handled MSN, not SIP.

I requested permission to provide the logging instructions for the MSN (personal) service. Please remember a few things - I don't use a Mac on a daily basis, just the client and only that for occasional testing. I also don't support the MSN (personal) service and as such I will NOT be able to assist you with these logs. I have been informed that while you can now have the instructions to create a log, you will likely still need assistance from those supporting the client.

Messenger Logs Messenger logs are helpful when you are having an issue with signing in to the MSN (personal) service, seeing contacts online presence and for several other reasons as well.

Enabling Messenger Logs: Quit Messenger
Go to /Applications/Utilities and launch the Terminal application
Type the following on one line exactly as you see below:
defaults write ~/Library/Preferences/Microsoft/com.microsoft.Messenger EnableConnectionLogging -bool true

Disabling Messenger Logs:
Quit Messenger
Go to /Applications/Utilities and launch the Terminal application
Type the following on one line exactly as you see below:
defaults write ~/Library/Preferences/Microsoft/com.microsoft.Messenger EnableConnectionLogging -bool false

Locating Messenger Logs: Messenger logs are located in your ~/Documents folder and the file name is Microsoft Messenger.log

Deleting Messenger Logs: Quit Messenger
Move the log named Microsoft Messenger.log to the trash and empty it

Notes about Messenger Logs: Enabling logs saves a file containing personal information to ~/Documents. Anyone with access to this directory can open this file.
They are not automatically deleted
They will continue to grow in size if you don't delete them from time to time or disable logging
Deleting your log without disabling logging will create a new log on launch of Messenger
Deleting your com.microsoft.messenger.plist file (preference file) will clear out any settings for logging. You will have to re-enable the logging again if you want to get a Messenger log file

I hope that this information is valuable, I hope even more that you just don't need it!

 TomL OCSKid