Lots of fiddling arround, tls_versions: ssl3 tls1_2 in the imapd.conf file also fixed the issue. However, some clients (notably older Mac Mail clients) were not able to connect. > On Mar 3, 2016, at 2:49 AM, Wolfgang Breyha <wbreyha@xxxxxxx> wrote: > > On 02/03/16 12:02, Wolfgang Breyha via Info-cyrus wrote: >> You do not need to rebuild OpenSSL. I would check the SPEC File of the CentOS >> 7 RPM which patches they included. If the TLS changes were not backported I >> would try to build one of the newer 2.4.18 SRPMs for Fedora (eg. 23) on CentOS 7. > > As of today RHEL/CentOS ships openssl updates with deactivated SSLv2 at > build time. It should be enough to update it and restart cyrus. > > Greetings, Wolfgang > -- > Wolfgang Breyha <wbreyha@xxxxxxx> | http://www.blafasel.at/ > Vienna University Computer Center | Austria ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus