It works on SSL (port 993). It doesn't works on port 143 with TLS.
That makes sense, because AFAIK port 143 is for TLSv1 only. If the client tries anything but TLSv1 on port 143, that should cause an error.
Doing some change on ssl in about:config of thunderbird gave me differents logs : Jan 16 17:53:27 imaptest imap[35698]: accepted connection Jan 16 17:53:27 imaptest imap[35698]: imapd:Loading hard-coded DH parameters Jan 16 17:53:27 imaptest imap[35698]: SSL_accept() incomplete -> wait Jan 16 17:53:59 imaptest imap[35698]: EOF in SSL_accept() -> fail Jan 16 17:53:59 imaptest imap[35698]: STARTTLS negotiation failed: [10.1.45.1]
OK, but what did you change? I can't verify if it works because I don't have client certificates, but looking at my copy of Thunderbird the following account settings *should* work:
Port 143, connect via TLSMake sure that encryption is set to TLS and *not* to SSL in the account settings ...
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