I upgraded to the Custom Build posted overnight. The upgrade was smooth and MailService.exe and MailService_SubProcess.exe was running for a while. When I checked on the server this afternoon, the CPU was super high. MailService.exe was using everything and MailService_SubProcess.exe was not running.
The spool was backed up with about 1500 messages.
I disabled Cyren Anti-spam checking and the CPU gradually went down and the spool cleared through.
I then ran MailService_SubProcess.exe in a Command Prompt and re-enabled Cyren Anti-spam checking. It outputted the following:
C:\Program Files (x86)\SmarterTools\SmarterMail\Service>MailService_SubProcess.e
xe
Received request to scan a message...
Scanning Message: 54976
Sending SmarterMail error code: e10
Error Message: 54976~%!#~Exception while processing message: 54976, Exception: C
ommtouch license details are not set
Received request to scan a message...
Scanning Message: 54974
Sending SmarterMail error code: e10
Error Message: 54974~%!#~Exception while processing message: 54974, Exception: O
bject reference not set to an instance of an object.
Received request to scan a message...
Scanning Message: 54975
Sending SmarterMail error code: e10
Error Message: 54975~%!#~Exception while processing message: 54975, Exception: O
bject reference not set to an instance of an object.
Received request to scan a message...
Scanning Message: 54977
Sending SmarterMail error code: e10
Error Message: 54977~%!#~Exception while processing message: 54977, Exception: O
bject reference not set to an instance of an object.
Received request to scan a message...
Scanning Message: 54978
Sending SmarterMail error code: e10
Error Message: 54978~%!#~Exception while processing message: 54978, Exception: O
bject reference not set to an instance of an object.
I have re-disabled the Cyren Anti-spam checking until this issue can be resolved.
Dave