After upgrading a server to libssl1.1 1.1.0f-4 kmail on debian/stable could not
connect to dovecot on debian/unstable any more (kmail on debian/unstable can't
Dovecot logs "... tls_process_client_hello:version too low ..."
Probably this is due to "Disable TLS 1.0 and 1.1".
Please reactivate it. We would like to continue our policy to continously test
debian/unstable and debian/testing on servers in our environment.
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