Dear all, I have compiled dovecot.When i use dovecot --build-options , i receive following messages: ------------------------------------------------ debian:/home/mohsen# dovecot --build-options Build options: ioloop=epoll notify=inotify ipv6 openssl Mail storages: maildir mbox dbox cydir raw SQL drivers: Passdb: checkpassword vpopmail Userdb: prefetch static vpopmail ------------------------------------------------------- Also i have vpopmail & installed it to /home/vpopmail I added joojoo domain. & postmaster at joojoo user. When i use mysql vpopmail,and use select pw_domain,pw_name,pw_clear_password from vpopmail; Then i see following message: +------------+------------+-----------------+ | pw_domain | pw_name | pw_clear_passwd | +------------+------------+-----------------+ | joojoo | postmaster | 123456 | | final.com | postmaster | 123456 | | janjan.com | postmaster | 123456 | | final.com | mohsen | 123456 | | final.com | kamal | 123456 | +------------+------------+-----------------+ When i use `telnet 0 110` i see following message plus my command: debian:/home/mohsen# telnet 0 110 Trying 0.0.0.0... Connected to 0. Escape character is '^]'. +OK Dovecot ready. user postmaster at joojoo +OK pass 123456 -ERR Authentication failed. ^] telnet> quit Connection closed. ///////////////////////// Then i see my log file & saw following messages: ////////////////////////////////////////////////// dovecot: Mar 02 20:10:23 Info: auth(default): new auth connection: pid=2657 dovecot: Mar 02 20:10:39 Info: auth(default): client in: AUTH 1 PLAIN service=pop3 secured lip=127.0.0.1 rip=127.0.0.1 lport=110 rport=38239 resp=AHBvc3RtYXN0ZXJAam9vam9vADEyMzQ1Ng=dovecot: Mar 02 20:10:39 Info: auth(default): checkpassword(postmaster at joojoo,127.0.0.1): execute: /home/vpopmail/bin/vchkpw /usr/local/libexec/dovecot/checkpassword-reply dovecot: Mar 02 20:10:39 Info: auth(default): checkpassword(postmaster at joojoo,127.0.0.1): Received no input dovecot: Mar 02 20:10:39 Info: auth(default): checkpassword(postmaster at joojoo,127.0.0.1): exit_status=3 dovecot: Mar 02 20:10:39 Info: auth(default): checkpassword(postmaster at joojoo,127.0.0.1): Login failed (status=3) dovecot: Mar 02 20:10:39 Info: auth(default): vpopmail(postmaster at joojoo,127.0.0.1): lookup user=postmaster domain=joojoo dovecot: Mar 02 20:10:39 Info: auth(default): vpopmail(postmaster at joojoo,127.0.0.1): unknown user dovecot: Mar 02 20:10:41 Info: auth(default): client out: FAIL 1 user=postmaster at joojoo dovecot: Mar 02 20:10:53 Info: pop3-login: Disconnected (auth failed, 1 attempts): user=<postmaster at joojoo>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured ////////////////////////////////////////////////// I use dovecot -n & saw following messages: debian:/home/mohsen# dovecot -n # 1.1.11: /usr/local/etc/dovecot.conf # OS: Linux 2.6.26-1-486 i686 Debian 5.0 log_path: /var/log/dovecot.log info_log_path: /var/log/dovecot.info protocols: pop3 ssl_disable: yes disable_plaintext_auth: no login_dir: /usr/local/var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/pop3-login first_valid_uid: 89 last_valid_uid: 89 mail_uid: 89 mail_gid: 89 mail_location: maildir:~/Maildir maildir_copy_preserve_filename: yes mail_executable: /usr/local/libexec/dovecot/pop3 mail_plugin_dir: /usr/local/lib/dovecot/pop3 auth default: user: vpopmail verbose: yes debug: yes debug_passwords: yes passdb: driver: checkpassword args: /home/vpopmail/bin/vchkpw passdb: driver: vpopmail args: cache_key=%u%s * userdb: driver: vpopmail debian:/home/mohsen# ------------------------------------- Please guide me.......