The original is on archive.org.
The exchange server goofed. It had an error that read:
There was an error logging out from the POP3 server (mailbox <mail.mydomain.com [xxxxxxxx@mydomain.com]>). The error is -2147014858 (An operation was attempted on something that is not a socket.
). All the messages will remain in the server and its recipients may receive it more than once.
A reboot fixed it. Everything else on the web that I found had to deal with XP and other products.