dovecot TSL 1.3 config option 'ssl_ciphersuites' causes fatal error on launch. not supported, bad config, or bug?

[Arjen de Korte]

Citeren PGNet Dev <pgnet.dev at gmail.com>:

> I've installed
>
> 	grep PRETTY /etc/os-release
> 		PRETTY_NAME="Fedora 32 (Server Edition)"
> 	dovecot --version
> 		2.3.10.1 (a3d0e1171)
> 	openssl version
> 		OpenSSL 1.1.1g FIPS  21 Apr 2020
>
> iiuc, Dovecot has apparently had support for setting TLS 1.3  
> ciphersuites since v2.3.9, per this commit
>
> 	lib-ssl-iostream: Support TLSv1.3 ciphersuites
> 	  
> https://github.com/dovecot/core/commit/8f6f04eb21276f28b81695dd0d3df57c7b8f43e4

There is a pull request for TLSv1.3 sitting in the queue:  
https://github.com/dovecot/core/pull/126, maybe this helps?