Hello Gents,
I've had a problem for a couple of months. Sizable messages have not been delivered as email. Yes, the size is below that allowed for attachments by our Exchange servers. I can find the following errors in the logs.

2011/11/02 00:02:53:567 WARNING:3 ASSOC: MTA
LEVEL: INFO DESC: INFO
INFO: MTA, USmtpSendMail, -162, End of socket stream data

2011/11/02 00:02:53:567 MAIL_REPORT:10 ASSOC:
LEVEL: INFO DESC: SMTP Delivery Failure
INFO: Domain: mail.******.com, SMTP: localdomain, From: ******@******.com, To: ******@******.com, Error Info: 417 Temporary deliv
ery error, Error in function {CreateFileMapping}

The Exchange servers don't even see it. Is there something going on with the Send Mail app on the EM?