On Tue, 6 Aug 2019, telsch wrote:
if i cat ssl_ca and ssl_cert into one file and only use ssl_cert it's working with 2.3.X
ssl_ca = </etc/ssl/ca-bundle.pem ssl_cert = </etc/ssl-imap.pem
In the words of Montoya, "I do not think it means what you think it
means", referring to "ssl_ca". That file is not used to to establish
the trust chain to your server certificate, but rather, to your client's
certificates (e.g. if you run a local CA to issue user certificate
for mutual authentication, you would put your local CA certificate here).
(Maybe this config variable should be renamed "ssl_client_ca".)
... except there already is ssl_client_ca_* settings used to validate connections from dovecot.