Dan White <dwhite@xxxxxxx> schrieb: > See if you have any additional information in your auth syslog > output (auth.log). there is nothing.. > This would seem to be saying that the username that Outlook is > submitting is not being found in your sasldb2 database. Yes > Are your users stored in upper case (BENUTZER) within sasldb2? No, "BENUTZER" is german for "USER", just a placeholder, sorry. All Users stored in lower case. And if i set: allowplaintext: yes sasl_mech_list: LOGIN in my imapd.conf, i can't login with claws-mail anymore: cyrus/imaps[7746]: starttls: TLSv1 with cipher AES128-SHA (128/128 bits new) no authentication cyrus/imaps[7746]: badlogin: dslb-085-064-190-000.pools.arcor-ip.net [83.64.190.000] plaintext daniel SASL(-13): user not found: checkpass failed Bevore i add/change this 2 lines, i can login with Claws-Mail, Thunderbird, ... Daniel