[Dovecot] dovecot auth password mismatch

[david at davidwbrown.name]

Hello dovecot gods, after using Postfix with webmail for 8 years the new gen of email smartphones forces me to consider using IMAP. Actually, for several months I was successfully using IMAP. I believe the reason why IMAP worked previously (before migrating to the Cloud) the hosting server and the client machines were considered local by the system. Now, I have moved everything to a Cloud service. And, now attempts to use my Ubuntu Evolution or iPhone generates the following error condition in my logs:

dovecot: auth(default): client in: AUTH	1	PLAIN	service=imap	lip=xxx.yyy.www.zzz	rip=75.214.160.72	lport=143	rport=59107	resp=AGRhdmlkAGx1dGVmaXNr
dovecot: auth(default): passwd(kilroy,75.214.160.72): lookup
dovecot: auth(default): passwd(kilroy,75.214.160.72): Password mismatch
dovecot: auth(default): passwd(kilroy,75.214.160.72): CRYPT(mypass) != 'x'
dovecot: auth(default): new auth connection: pid=15522
dovecot: auth(default): client out: FAIL	1	user=kilroy


*******************
dovecot -n
*******************
1.2.9: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.34.1-rscloud x86_64 Ubuntu 10.04.2 LTS
log_timestamp: %Y-%m-%d %H:%M:%S
disable_plaintext_auth: no
login_dir: /var/run/dovecot/login
login_executable: /usr/lib/dovecot/imap-login
mail_privileged_group: mail
mail_location: maildir:~/Maildir
mbox_write_locks: fcntl dotlock
auth default:
  realms: myname.name, hisname.name, hername.name
  default_realm: myrealm.com
  username_format: %n
  verbose: yes
  debug: yes
  debug_passwords: yes
  passdb:
    driver: passwd
  userdb:
    driver: passwd