On Tuesday, 20 February 2024, at 10:45 AM, cyrus wrote:
> Perhaps try and delete your tls_sessions.db file (after stopping
cyrus master) and then restart it.
Sorry, I cannot test this option: it is a production cluster, and we used the
very first effective fix. However, I doubt that it could help; the issue
happened at *second *connection only, when tls_sessions database already has
fresh fingerprint from this client.
Settingg number of concurrent connections to one at client side fixed the issue
too. By default Thunderbird uses 3 or 5 connections to server to improve
performance.
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Cyrus: Info
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