Hello, currently i am setting up a loadbalanced frontend -> backend cyrus imap solution (murder). Currently we are running 2 frontends (1 mupdate master on frontend) en 1 backend server. software Cyrus POP3 Murder v2.2.12-Invoca-RPM-2.2.12-8.1.RHEL4 on Centos 4.4 backend imapd.conf: configdirectory: /var/lib/imap partition-default: /var/spool/imap admins: cyrus sievedir: /var/lib/imap/sieve sendmail: /usr/sbin/sendmail hashimapspool: true sasl_pwcheck_method: saslauthd sasl_mech_list: PLAIN allowplaintext: yes virtdomains: userid defaultdomain: localhost.localdomain unixhierarchysep: yes allowusermoves: yes tls_cert_file: /usr/share/ssl/certs/cyrus-imapd.pem tls_key_file: /usr/share/ssl/certs/cyrus-imapd.pem tls_ca_file: /usr/share/ssl/certs/ca-bundle.crt tls_require_cert: 0 mupdate_server: server01 mupdate_port: 3905 mupdate_authname: cyrus mupdate_username: cyrus mupdate_password: cyrus proxyservers: murder frontend imapd.conf: configdirectory: /var/lib/imap partition-default: /var/spool/imap admins: cyrus sasl_pwcheck_method: saslauthd sasl_mech_list: PLAIN sasl_minimum_layer: 0 allowplaintext: yes virtdomains: userid defaultdomain: localhost.localdomain unixhierarchysep: yes allowusermoves: yes tls_cert_file: /usr/share/ssl/certs/cyrus-imapd.pem tls_key_file: /usr/share/ssl/certs/cyrus-imapd.pem tls_ca_file: /usr/share/ssl/certs/ca-bundle.crt mupdate_server: server01 mupdate_port: 3905 mupdate_authname: cyrus mupdate_username: cyrus mupdate_password: cyrus # How to get to backends server05_sylconia_nl_authname: murder server05_sylconia_nl_password: murder proxy_authname: murder I am using LDAP to authenticate users which is working fine. When i login with Thunderbird for example to the backend their is nog problem but when i try to login via the frontend. I receive the following error Jun 12 16:31:46 server02 imap[7181]: login: [192.168.1.100] email@xxxxxxxxx plaintext Jun 12 16:31:46 server02 imap[7181]: Doing a peer verify Jun 12 16:31:46 server02 imap[7181]: verify error:num=18:self signed certificate Jun 12 16:31:46 server02 imap[7181]: received server certificate Jun 12 16:31:46 server02 imap[7181]: starttls: TLSv1 with cipher AES256-SHA (256/256 bits new) no authentication Jun 12 16:31:46 server02 imap[7181]: couldn't authenticate to backend server: no mechanism available any suggestions or tips? Regards Constan ---- 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