Reindl, thanks again for your email, but now I realize that perhaps you misunderstood my problem. I have got the SSL working with the config presented in my first post. The problem is that I'm surprised that Dovecot lets clients establish an SSL connection even when the client doesn't present a certificate. I don't want clients without a valid certificate even establish an SSL connection.
On 28.06.2013 23:34, Reindl Harald wrote:
Am 28.06.2013 23:31, schrieb Ireneusz Szcześniak:
I've been using Dovecot 2.1.8 on OpenBSD 5.2 i386 for about a month. It works great. Dovecot serves IMAPS only, and I'm using Thunderbird to access my mail.
I configured Dovecot to allow clients that present a valid certificate when establishing SSL connection. I configure my Thunderbird for SSL/TLS connection with normal password. It works fine.
However, with my config anybody can connect to my server without presenting a certificate
google "dovecot ssl client certificate" leads to http://wiki.dovecot.org/SSL/DovecotConfiguration
well, this is for dovecot 1.x, but have you tried it?
Client certificate verification/authentication If you want to require clients to present a valid SSL certificate, you'll need these settings:
ssl_ca_file = /etc/ssl/ca.pem ssl_verify_client_cert = yes auth default { ssl_require_client_cert = yes .. }
-- Ireneusz (Irek) Szczesniak http://www.irkos.org