Hello list. This is my first post and I hope that I have something useful for people. Using Fedora Core 1 with the stock dovecot-0.99.10 RPM I noticed that user names were case sensitive which was a problem for me since I was attempting to set up winbind authentication which meant that what dovecot thought the homedir was could change depending upon the case the user typed in. Sendmail/procmail always changed the username to lowercase so I needed a way to duplicate this behavior. At any rate, I searched the archives and found Andrew's post from March: http://www.dovecot.org/list/dovecot/2004-March/003067.html - using this as a jumping point and I finally have case insensitive user names (better yet, forced lower case usernames) working for plain-text authentication (eg. dovecot.conf: auth = plain, auth_userdb = passwd, auth_passdb = passwd). It has been tested only on the source RPM from Redhat FC1 and I'm not a C programmer so I have no idea if it will work with other authentication methods or newer versions of software. I've rebuilt the RPMs (source and i386) if anyone's interested and here's the patch for those not using RPMs (it's attached as well): diff -ru dovecot-0.99.10/src/auth/mech-plain.c dovecot-0.99.10.new/src/auth/mech-plain.c --- dovecot-0.99.10/src/auth/mech-plain.c 2003-05-18 08:26:28.000000000 -0400 +++ dovecot-0.99.10.new/src/auth/mech-plain.c 2004-05-11 16:58:30.000000000 -0400 @@ -57,6 +57,7 @@ authenid); } + auth_request->user = str_lcase(auth_request->user); if (!mech_is_valid_username(auth_request->user)) { /* invalid username */ if (verbose) { Thanks, Jeff Graves, MCP Customer Support Engineer Image Source, Inc. 10 Mill Street Bellingham, MA 02019 508.966.5200 - Phone 508.966.5170 - Fax jeff@image-src.com - Email