[Dovecot] managesieve : unable to authenticate with cram-md5

[Arnaud]

Hi,

Seem i switch my dovecot authentification to cram-md5 mecanism, i'am 
unable to authenticate to managesieve login.

log:
Dec 16 23:50:16 managesieve-login: Info: Disconnected (disconnected 
while authenticating): method=CRAM-MD5, rip=192.168.0.100, lip=192.168.0.50

dovecot -n :

# 1.2.8: /etc/mailapp/dovecot/dovecot.conf
# OS: Linux 2.6.22.8 x86_64
log_path: /var/log/dovecot.log
protocols: imaps managesieve
listen(default): *
listen(imap): *
listen(managesieve): *:2000
ssl_listen: *:993
ssl_cert_file: /etc/mailapp/dovecot/certs/dovecot.pem
ssl_key_file: /etc/mailapp/dovecot/private/dovecot.pem
disable_plaintext_auth: yes
login_dir: /usr/local/dovecot/var/run/dovecot/login
login_executable(default): /usr/local/dovecot/libexec/dovecot/imap-login
login_executable(imap): /usr/local/dovecot/libexec/dovecot/imap-login
login_executable(managesieve): 
/usr/local/dovecot-manage-sieve/libexec/dovecot/managesieve-login
login_greeting: Hello, have an account here ?
login_process_per_connection: no
verbose_proctitle: yes
dotlock_use_excl: no
fsync_disable: yes
mail_executable(default): /usr/local/dovecot/libexec/dovecot/imap
mail_executable(imap): /usr/local/dovecot/libexec/dovecot/imap
mail_executable(managesieve): 
/usr/local/dovecot-manage-sieve/libexec/dovecot/managesieve
mail_plugins(default): quota imap_quota
mail_plugins(imap): quota imap_quota
mail_plugins(managesieve):
mail_plugin_dir(default): /usr/local/dovecot/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/dovecot/lib/dovecot/imap
mail_plugin_dir(managesieve): /usr/local/dovecot/lib/dovecot/managesieve
managesieve_logout_format(default): bytes=%i/%o
managesieve_logout_format(imap): bytes=%i/%o
managesieve_logout_format(managesieve): bytes (in=%i:out=%o)
lda:
   postmaster_address: postmaster at adlx.net
   hostname: adlx.net
   mail_plugin_dir: /usr/local/dovecot/lib/dovecot/lda
   mail_plugins: sieve quota
   sendmail_path: /usr/sbin/sendmail
   auth_socket_path: /var/run/dovecot/auth-master
   log_path: /var/log/dovecot-deliver-errors.log
   info_log_path: /var/log/dovecot-deliver-infos.log
auth default:
   mechanisms: cram-md5
   passdb:
     driver: sql
     args: /etc/mailapp/dovecot/dovecot-sql.conf
   userdb:
     driver: sql
     args: /etc/mailapp/dovecot/dovecot-sql.conf
   socket:
     type: listen
     client:
       path: /var/run/dovecot/auth-client
       mode: 438
     master:
       path: /var/run/dovecot/auth-master
       mode: 384
       user: arnaud
       group: users
plugin:
   quota: maildir:%n quota
   quota_rule: *:storage=1G
   sieve_before: /var/imap/before.sieve
   sieve: /var/imap/%n.sieve
   sieve_dir: /var/imap/%d/%n/sieve

All works fine with plain authentification and managesieve. Perhaps 
someone have a workaround. I use thunderbird version 2.0.0.23 as MUA.

Thanks for reading !