Just updated courier-imapd-ssl on debian and got this error in the logs and was unable to connect:
connect: error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number
For some reason, my existing /etc/courier/imap-ssl file had:
TLS_PROTOCOL=SSL3
I changed it to:
TLS_PROTOCOL=SSL23
And everything worked fine again. Hope that helps!
UPDATE: Hit another snag on another update:
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