|Component:||Microsoft Exchange POP3 Service|
|Message:||Authentication attempt from <name> to <host name> has failed with error <text>.|
This event indicates that when a POP3 client made an attempt to access a mailbox on the Exchange server, the attempt failed because of a logon failure. The error 0x52e translates to ERROR_LOGON_FAILURE. This error occurs because the value in the User Logon Name (Pre-Windows 2000) box does not match the value in the Mailbox Alias box.