dovecot: Jul 02 15:36:43 Info: Dovecot v1.0.15 starting up
dovecot: Jul 02 15:36:43 Error: auth(default): Unknown database driver 'mysql'
dovecot: Jul 02 15:36:43 Error: Auth process died too early - shutting down
dovecot: Jul 02 15:36:43 Error: child 25888 (auth) returned error 89

dovecot.conf

protocols = imap pop3
disable_plaintext_auth = no
log_path = /var/log/dovecot.log
info_log_path = /var/log/dovecot.log
log_timestamp = "%b %d %H:%M:%S "
ssl_disable = yes
mail_location = /var/spool/vmail/igiuv.ru/%n
mail_debug = yes
mail_log_prefix = "%Us(%u): "
first_valid_uid = 1000
first_valid_gid = 1000
protocol imap {
  #login_executable = /usr/libexec/dovecot/imap-login
  #mail_executable = /usr/libexec/dovecot/imap
  #imap_max_line_length = 65536
  #mail_plugins =
  #mail_plugin_dir = /usr/lib/dovecot/imap
  #login_greeting_capability = no
  #imap_capability =
  #imap_client_workarounds = outlook-idle
}
protocol pop3 {
  #login_executable = /usr/libexec/dovecot/pop3-login
  #mail_executable = /usr/libexec/dovecot/pop3
  #pop3_no_flag_updates = no
  #pop3_enable_last = no
  #pop3_reuse_xuidl = no
  #pop3_lock_session = no
  #pop3_uidl_format = %08Xu%08Xv
  #pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s
  #mail_plugins =
  #mail_plugin_dir = /usr/lib/dovecot/pop3
  #pop3_client_workarounds =
}
auth_debug = yes
auth default {
  mechanisms = plain
  passdb sql {
    args = /etc/dovecot-mysql.conf
    }
  userdb static {
    args = uid=500 gid=500 home=/var/spool/vmail/igiuv.ru/%n
  }
  user = root
}

dovecot-mysql.conf

driver = mysql
#connect = host=localhost  dbname=mail user=postfix password=nekogdadumo
connect = host=/var/lib/mysql/mysql.sock dbname=mail user=postfix password=pass
default_pass_scheme = PLAIN
password_query = SELECT login as user, password FROM users WHERE login = '%n' and disabled='0'

Система ASPLinux 14, MTA - Postfix.

[root@gw etc]# dovecot --build-options
Build options: ioloop=poll notify=inotify ipv6 openssl
SQL drivers: mysql postgresql sqlite
Passdb: checkpassword ldap pam passwd passwd-file shadow sql
Userdb: checkpassword ldap passwd prefetch passwd-file sql static

Jun 16 16:34:09 surgut-mosap postfix/qmgr[5073]: 8B5F23267B0: to=<adminmosap@surut-mosap.ru>, relay=none, delay=0.09, delays=0.08/0.01/0/0, dsn=4.3.0, status=deferred (mail transport unavailable)
Jun 16 16:34:09 surgut-mosap postfix/smtpd[5078]: disconnect from localhost[127.0.0.1]
Jun 16 16:34:59 surgut-mosap postfix/qmgr[5073]: warning: connect to transport spamfilter: Connection refused

воот, теперь яснее
постфикс не может передать письмо на проверку спам-фильтру...
прочитайте пункт №10 по моей ссылке, обращая внимание на порты, на который отправляет постфикс, на котором слушает clamsmtp

почитайте тут:
http://ubuntologia.ru/forum/viewtopic.p … amp;t=2299
пункт №10

не работает

Jun 16 16:34:09 surgut-mosap sendmail[5077]: o5GAY94d005077: from=root, size=56, class=0, nrcpts=1, msgid=<201006161034.o5GAY94d005077@surgut-mosap.ru>, relay=root@localhost
Jun 16 16:34:09 surgut-mosap postfix/smtpd[5078]: connect from localhost[127.0.0.1]
Jun 16 16:34:09 surgut-mosap postfix/smtpd[5078]: 8B5F23267B0: client=localhost[127.0.0.1]
Jun 16 16:34:09 surgut-mosap postfix/cleanup[5083]: 8B5F23267B0: message-id=<201006161034.o5GAY94d005077@surgut-mosap.ru>
Jun 16 16:34:09 surgut-mosap sendmail[5077]: o5GAY94d005077: to=adminmosap@surut-mosap.ru, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30056, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (Ok: queued as 8B5F23267B0)
Jun 16 16:34:09 surgut-mosap postfix/qmgr[5073]: 8B5F23267B0: from=<root@surgut-mosap.ru>, size=546, nrcpt=1 (queue active)
Jun 16 16:34:09 surgut-mosap postfix/qmgr[5073]: 8B5F23267B0: to=<adminmosap@surut-mosap.ru>, relay=none, delay=0.09, delays=0.08/0.01/0/0, dsn=4.3.0, status=deferred (mail transport unavailable)
Jun 16 16:34:09 surgut-mosap postfix/smtpd[5078]: disconnect from localhost[127.0.0.1]
Jun 16 16:34:59 surgut-mosap postfix/qmgr[5073]: warning: connect to transport spamfilter: Connection refused

почитайте тут:
http://ubuntologia.ru/forum/viewtopic.p … amp;t=2299
пункт №10