Got it. Thank you very much.
On Wed, Apr 8, 2015 at 9:12 PM, Wietse Venema <wie...@porcupine.org> wrote: > Igor Homyakov: >> Hi, >> >> I've turned on TLS in postfix and I've started getting an error from >> some mail servers >> >> SSL_accept error from mass1a.sans.org[66.35.59.243]: -1 >> warning: TLS library problem: error:140760FC:SSL >> routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:649: > > Have a look at these settings: > >> smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1 >> smtpd_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1 > > Then, consider why you decided to use these. > > Wietse
