I’m getting the following exception when trying to connect using the IMAP Mailbox Browser sample app on one of my customer’s machines:
Rebex.Net.TlsException: Fatal error 'HandshakeFailure' has been reported by the remote connection end.--> Rebex.net.TlsException:
This is with the port set to 993, implicit TLS/SSL, and I'm allowing SSL 3.0 protocol and all ciphers.
On the same machine, I can connect with Outlook 2010 using these settings:
Incoming Server (IMAP): 993
Use the following type of encrypted connection: SSL
I've tried other combinations of settings in the IMAP Mailbox Browser, and they either timeout, or they get the error:
Server reported error:
AUTHENTICATE Unknown user or incorrect password (NO).
What needs to be done to connect to this IMAP server?