I upgraded one of my Courier servers from 0.62.1 to 0.63.0 this
morning.  After the upgrade, my Thunderbird client (WinXP, Thunderbird
2.0.0.23) started giving SSL errors for the IMAP account.  So far, I
have not been able to find any SSL settings in imap-ssl that will work.

With TLS_PROTOCOL commented out or set to SSL23, I get this:
Thunderbird error:
    Thunderbird can't connect securely to bucmail.buc.com because the
site uses a security protocol which isn't enabled.
Courier error:
    imapd-ssl: couriertls: connect: error:1408A0C1:SSL
routines:SSL3_GET_CLIENT_HELLO:no shared cipher

Setting TLS_PROTOCOL to SSL3 or TLS1, I can get the list of messages and
Thunderbird does not report any errors, but I cannot view the messages.
Courier error:
    imapd-ssl: couriertls: connect: error:1408F10B:SSL
routines:SSL3_GET_RECORD:wrong version number

Changing TLS_CIPHER_LIST does not seem to have any effect (I set it to
ALL with the same results).  I am using OpenSSL as far as I know.

I searched Google, and found several similar questions, but either there
was no answer, or the answer given did not work for me.

Any suggestions?

-- 
Bowie

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