ISSUE: SBS 2003 Exchange Pop3 connector was not passing the password to the ISP server
causing errors 1019, 1023, 1036, 1029. After 3 very long wasted hours of being on the phone with
Microsoft, this is what they came up with.
SOLUTION: On the Exchange server, Browse to c:\program files\Microsoft Small Business Server\Networking\POP3 directory.
Make a folder called 'BACKUP' and move the following three files into it: IMBData.dat IMBProtocol.dat IMBData.bak
Restart the 'Microsoft Exchange POP3' service
You will need to recreate the pop3 mailboxes in the POP3 Connector. And Vwalla it worked!!!