[Dovecot] dovecot-lmtp does not work

[Andy R]

Hi there,

Have you added 'lmtp' to the protocols line in dovecot.conf ? It's not 
listed in your doveconf -n.

IE :-

# Protocols we want to be serving.
#protocols = imap pop3 sieve
protocols = imap pop3 sieve lmtp


For logging, set "mail_debug = yes" (in 
/etc/dovecot/conf.d/10-logging.conf on my system).



On 31/05/2013 15:33, He Shiming wrote:
> Dear Community,
>
> I've got a weird problem regarding lmtp setup with dovecot 2.0.19 on ubuntu
> 12.04.2 LTS. My reference of the configuration is at
> https://library.linode.com/email/postfix/postfix2.9.6-dovecot2.0.19-mysql ,
> and my configuration is identical to it with the exception of opening the
> 110 pop3 port, and enabling plain text auth. Everything from imap, smtp,
> pop3 (including auth) works except for lmtp.
>
> I saw thousands of the following messages in /var/log/mail.log:
>
> May 31 09:05:24 postfix/lmtp[3664]: 2FD80321F4: to=<myaddress at me.com>,
> relay=none, delay=0.41, delays=0.41/0/0/0, dsn=4.4.1, status=deferred
> (connect to me.com[private/dovecot-lmtp]: No such file or directory)
>
> And it happens when an incoming email is received.
>
> Here's the output of configuration:
>
> root at prosp:/etc/dovecot/conf.d# dovecot -n
> # 2.0.19: /etc/dovecot/dovecot.conf
> # OS: Linux 3.8.4-linode50 i686 Ubuntu 12.04.2 LTS ext3
> auth_mechanisms = plain login
> disable_plaintext_auth = no
> mail_location = maildir:/var/mail/vhosts/%d/%n
> mail_privileged_group = mail
> 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 {
>    args = /etc/dovecot/dovecot-sql.conf.ext
>    driver = sql
> }
> plugin {
>    sieve = ~/.dovecot.sieve
>    sieve_dir = ~/sieve
> }
> protocols = imap pop3 sieve
> service auth-worker {
>    user = vmail
> }
> service auth {
>    unix_listener /var/spool/postfix/private/auth {
>      group = postfix
>      mode = 0666
>      user = postfix
>    }
>    unix_listener /var/spool/postfix/private/dovecot-auth {
>      group = postfix
>      mode = 0660
>      user = postfix
>    }
>    unix_listener auth-userdb {
>      mode = 0600
>      user = vmail
>    }
>    user = dovecot
> }
> service imap-login {
>    inet_listener imap {
>      port = 0
>    }
> }
> service lmtp {
>    unix_listener /var/spool/postfix/private/dovecot-lmtp {
>      group = postfix
>      mode = 0600
>      user = postfix
>    }
> }
> service pop3-login {
>    inet_listener pop3 {
>      port = 110
>    }
> }
> 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 {
>    args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
>    driver = static
> }
> 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
> }
>
> This problem has been discussed here:
> http://serverfault.com/questions/512219/dovecot-lmtp-does-not-exist . I've
> then tried switching from unix socket to inet listener, and still got the
> same result. I cannot get lmtp service to start.
>
> I'm also seeing no errors in the log when dovecot is restarted (see the
> above link for the log).
>
> I'm wondering how do I go about troubleshooting this problem? What might be
> the possible cause? Is it possible for dovecot to output verbose logs
> regarding service startups?
>
> Thank you.
>