Exchange Server 2010 - Unable to download POP3 mail

Using Exchange Server 2010 and configured POP3. When you use Outlook express POP3 to download mail

I get error "Message number 1 could not be found. "Account: XXXXXXXXX server: 192.168.1.13 protocol POP3, server response: 'ERR Server Unavailable 21', port 110, secure (SSL): no, server 0x800CCC90, error number error: 0x800420CD.
Checked the scale in the Advanced tab "this server requires a secure SSL connection."

ASK THE QUESTION IN THE EXHANGE SERVER FORUMS:
http://social.technet.Microsoft.com/forums/en-us/category/ExchangeServer/

Tags: Windows

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