I am currently running Exchange 2003 server in the United States. I have about 5-7 employees in China that connect to our exchange server using Outlook Express over POP3. Last week they started having problems retrieving their email. everytime they started a send/recieve of their email they recieved an error. So I had the IT guy there connect to my server via telnet and attempt to check an email on one of the accounts. he was able to connect, execute the LIST and STAT commands. When he execute the RETR command to retieve a message he recieved a portion of it and then the telnet connection reported that the connection was dropped. I have no problems with pop 3 on that same account here in the states. I have even tested the server via a telnet connection at 2400 baud to determine if there was a speed factor involved and it still worked for me. Exchange server is showing no errors in any of the logs even with Diagnostic Logging turned on maximum for the POP3 service. ANyone have any ideas what might be causing this or any ideas of what else to test for?