Even though the install test succeeds...
From the roundcubeinstall webpage, I run the Test IMAP Config and I can log in.
I try the same userid and password (full ID@doman as above), and it fails. maillog is unhelpful:
Oct 14 08:34:24 z9m9z dovecot: auth: mysql: Connected to localhost (postfix) Oct 14 08:34:24 z9m9z dovecot: imap-login: Login: user=rgm@htt-consult.com, method=PLAIN, rip=208.83.67.180, lip=208.83.67.180, mpid=5626, secured Oct 14 08:34:24 z9m9z dovecot: imap(rgm@htt-consult.com): Disconnected: Logged out bytes=29/405 Oct 14 08:50:08 z9m9z dovecot: auth: mysql: Connected to localhost (postfix) Oct 14 08:50:08 z9m9z dovecot: imap-login: Login: user=rgm@htt-consult.com, method=PLAIN, rip=208.83.67.180, lip=208.83.67.180, mpid=5655, secured Oct 14 08:50:09 z9m9z dovecot: imap(rgm@htt-consult.com): Disconnected: Logged out bytes=12/342
1st is from install page and 2nd from webmail login page.
And why method=PLAIN? (I think I asked this question over a year ago when I was last testing Roundcube...)