JOYDEEP wrote: > is it possible to enable the TLs encryption in cyrus ? I don't need the > certificate to authenticate the client. only the transportation will be > encrypted. Hi! A look at /cyrus-imapd_source/doc/install-configure.html shows: SSL, TLS, and OpenSSL [...] Configuring Cyrus with OpenSSL [...] 1. openssl req -new -x509 -nodes -out /var/imap/server.pem -keyout /var/imap/server.pem -days 365 [...] 2. Make sure to make key file(s) readable by the Cyrus user. For example: chown cyrus /var/imap/server.pem 3. Add the following to /etc/imapd.conf to tell the server where to find the certificate and key file (used for ALL services): tls_cert_file: /var/imap/server.pem tls_key_file: /var/imap/server.pem [...] 4. You can test STARTTLS by using imtest: imtest -t "" foobar.andrew.cmu.edu In your imapd.conf I think there must be a line like imaps cmd="imapd -s" listen="imaps" prefork=0 More details in your_source-tree/doc/ Ciao! Carsten. ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html