[Dovecot] dovecot sasl + postfix issue

[tseveendorj]

Hello,

I'm trying to configure postfix + Dovecot SASL for user authenticated 
mail relay.

I set following configuration on postfix

queue_directory = /var/spool/postfix
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_authenticated_header = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myhostname
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = reject_unknown_sender_domain, 
reject_unknown_recipient_domain, reject_unauth_pipelining, 
permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination

Following are dovecot -n

# 2.0.19: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-29-generic x86_64 Ubuntu 12.04.1 LTS
auth_mechanisms = plain login digest-md5
base_dir = /var/run/dovecot/
mail_location = maildir:~/Maildir
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope 
encoded-character vacation subaddress comparator-i;ascii-numeric 
relational regex imap4flags copy include variables body enotify 
environment mailbox date ihave
passdb {
   driver = pam
}
plugin {
   sieve = ~/.dovecot.sieve
   sieve_dir = ~/sieve
}
protocols = imap pop3 sieve
service auth {
   unix_listener /var/spool/postfix/private/auth {
     group = postfix
     mode = 0660
     user = postfix
   }
   unix_listener /var/spool/postfix/private/dovecot-auth {
     group = postfix
     mode = 0660
     user = postfix
   }
}
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_cipher_list = 
ALL:!LOW:!SSLv2:ALL:!aNULL:!ADH:!eNULL:!EXP:RC4+RSA:+HIGH:+MEDIUM
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
   driver = passwd
}
protocol imap {
   imap_client_workarounds = delay-newmail
   mail_max_userip_connections = 10
}
protocol pop3 {
   mail_max_userip_connections = 10
   pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
}
protocol lda {
   deliver_log_format = msgid=%m: %$
   mail_plugins = sieve
   postmaster_address = postmaster
   quota_full_tempfail = yes
   rejection_reason = Your message to <%t> was automatically rejected:%n%r



when I see telnet localhost 25

eberx at beastie:/etc/dovecot/conf.d$ telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 beastie ESMTP Postfix (Ubuntu)
ehlo beastie
250-beastie
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
quit
221 2.0.0 Bye
Connection closed by foreign host.

there is no 250-AUTH

How do I fix this ?