Re: Thunderbird, multiple server connections and TLS sessions cache

Hello all.

It looks like that relatively fresh Thunderbird fails to
establish second TLS connection to server if TLS session caching
is enabled at server side. E.g, it fails to open Sent folder
while Inbox is opened. Diagnostc in server logs is dumb: "imaps
TLS negotiation failed".

Setting "tls_session_timeout: 0" solves the problem. "A
value of 0 will disable session caching".

As far as I see, Thunderbird 91 is not affected, 115 is
affected. Cyrus IMAP 3.6.1 in Debian Stable.

I'm using Thunderbird 115 and Cyrus 3.4 without any problems.

Perhaps try and delete your tls_sessions.db file (after stopping
cyrus master) and then restart it. It should get re-created on
startup.

Mark

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