hello Andrew, thanks again, both frontend and backend have the following modules pwd /usr/lib/sasl2 libanonymous.la libdigestmd5.so.2 libplain.la libanonymous.so libdigestmd5.so.2.0.19 libplain.so libanonymous.so.2 libgssapiv2.la libplain.so.2 libanonymous.so.2.0.19 libgssapiv2.so libplain.so.2.0.19 libcrammd5.la libgssapiv2.so.2 libsasldb.la libcrammd5.so libgssapiv2.so.2.0.19 libsasldb.so libcrammd5.so.2 liblogin.la libsasldb.so.2 libcrammd5.so.2.0.19 liblogin.so libsasldb.so.2.0.19 libdigestmd5.la liblogin.so.2 Sendmail.conf libdigestmd5.so liblogin.so.2.0.19 I tried adding more mechanics at sasl_mech_list: in imapd.conf on the backend with no changed results. Regards Constan Andrew Morgan schreef: > On Thu, 12 Jun 2008, Cyrus @ Sylconia wrote: > >> Hello Andrew, >> >> thanks for your suggestion unfortunatly still the same error message >> >> Jun 12 19:04:40 server02 imap[10514]: login: [192.168.1.101] email@xxxxxxxxx plaintext >> Jun 12 19:04:41 server02 imap[10514]: Doing a peer verify >> Jun 12 19:04:41 server02 imap[10514]: verify error:num=18:self signed certificate >> Jun 12 19:04:41 server02 imap[10514]: received server certificate >> Jun 12 19:04:41 server02 imap[10514]: starttls: TLSv1 with cipher AES256-SHA (256/256 bits new) no authentication >> Jun 12 19:04:41 server02 imap[10514]: couldn't authenticate to backend server: no mechanism available > > Argh, this seems familiar but I can't remember the details... > > I'm running Cyrus on Debian, so I don't know if you have similar packages on Redhat. Do you have a package named libsasl2-modules? On Debian, this contains files stored in /usr/lib/sasl2/ that provide various mechanisms, including libplain.so. > > Hopefully I'm steering you in the right direction at least! > > Andy ---- 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