Any attempt to get the list of folders fails with the error code 800cccd1 at the client, and the message 'LOGIN FAILED' in the server maillog. Like Following msg
"800cccd1" is an internal Microsoft error code, that means absolutely nothing as far as the IMAP protocol is concerned. There's no such thing as "error code 800cccd1" in IMAP.
If you need assistance with an issue that's particular to Microsoft's software, you'll need to contact Microsoft's technical support.
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