A POP3 client connects to a Microsoft Exchange Server 2007 Client Access server to access a mailbox that is hosted on an Exchange Server 2003 server. In this situation, the POP3 client does not download email messages. Additionally, the POP3 client receives the following error message:
Your POP3 server has not responded in 60 seconds. Would you like to wait another 60 seconds for the server to respond?