[Dovecot] Dovecot strange logs

[Guillaume de Lafond]

Hello,

I have some strange logs entries in my dovecot_info.log  
(auth_debug=yes & auth_verbose=ye) :

dovecot: Nov 27 00:28:09 Info: auth(default):  
vpopmail(CLIENT_EMAIL,CLIENT_IP): lookup user= domain=??п?????
dovecot: Nov 27 00:28:09 Info: auth(default):  
vpopmail(CLIENT_EMAIL,CLIENT_IP): lookup user=CLIENT_USER  
domain=CLIENT_DOMAIN
dovecot: Nov 27 00:28:09 Info: auth(default):  
vpopmail(CLIENT_EMAIL,CLIENT_IP): lookup user=CLIENT_USER domain=  
CLIENT_DOMAIN

(replace CLIENT_EMAIL,CLIENT_IP,CLIENT_USER,CLIENT_DOMAIN with real  
value of course)
For each authentication I have the in first line : "lookup user=  
domain=??п?????"
It's working.. but I think that it's not normal :)

My dovecot -n :

# 1.0.7: /usr/local/etc/dovecot.conf
base_dir: /var/run/dovecot/
log_path: log/dovecot.log
info_log_path: log/dovecot_info.log
protocols: imap pop3
disable_plaintext_auth: no
login_dir: /var/run/dovecot/login
login_executable(default): /usr/local/libexec/dovecot/imap-login
login_executable(imap): /usr/local/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/libexec/dovecot/pop3-login
login_greeting: Mail server
login_process_per_connection: no
login_process_size: 96
login_processes_count: 10
login_max_processes_count: 196
verbose_proctitle: yes
first_valid_uid: 89
mail_location: maildir:~/Maildir:INDEX=/Volumes/LD1/dovecot_indexes/ 
%1d/%d/%n
mmap_disable: yes
dotlock_use_excl: yes
maildir_copy_with_hardlinks: yes
mail_executable(default): /usr/local/libexec/dovecot/imap
mail_executable(imap): /usr/local/libexec/dovecot/imap
mail_executable(pop3): /usr/local/libexec/dovecot/pop3
mail_plugins(default): quota imap_quota
mail_plugins(imap): quota imap_quota
mail_plugins(pop3): quota
mail_plugin_dir(default): /usr/local/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3
imap_client_workarounds(default): outlook-idle delay-newmail
imap_client_workarounds(imap): outlook-idle delay-newmail
imap_client_workarounds(pop3): outlook-idle
pop3_uidl_format(default):
pop3_uidl_format(imap):
pop3_uidl_format(pop3): %f
pop3_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
namespace:
  type: private
  separator: .
  prefix: INBOX.
  inbox: yes
namespace:
  type: private
  separator: /
  prefix: INBOX/
  inbox: yes
  hidden: yes
auth default:
  mechanisms: plain login apop cram-md5
  cache_size: 1024
  verbose: yes
  debug: yes
  count: 10
  passdb:
    driver: vpopmail
    args: cache_key=%u dovecot
  userdb:
    driver: vpopmail
plugin:
  quota: maildir


Regards,
-- 
Guillaume de Lafond
Aqua Ray