lda and lmtp error after upgrading dovecot

[giorgio paolucci]

Hello everybody,
after upgrading dovecot on a debian wheezy installation from the
standard package version (dovecot 2.1.7) to dovecot 2.2.13-11 from
wheezy-backports, i noticed some errors in my logs...

Apr 28 22:00:13 lmtp(4879, xxxxxxxxx at unipd.it): Info: copy from <lmtp
DATA>: box=INBOX, uid=error,
msgid=<20150428200011.47D801F32 at mydoom.unipd.it>, size=1523

They are not frequent but still coninuing since the upgrade.

After the upgrade I found also errors coming fom lda:

Apr 28 12:29:36 lda(userxxxxxx at unipd.it): Info: copy from stdin:
box=INBOX, uid=error, msgid=, size=595
Apr 28 12:29:37 lda(userxxxxxx at unipd.it): Info: msgid=unspecified: saved
mail to INBOX

Strange thing as I use lmtp for local delivery.

Is there some tuning I can do? My storage is accessed via NFS with a
load blancer keeping sticky sessions "per user".

Is there any risk to loose mails?

Here is my dovecot -n

Thanks in advance.

Best regards

Giorgio
======================================

# 2.2.13: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.8
auth_default_realm = unipd.it
disable_plaintext_auth = no
log_path = /var/log/dovecot/dovecot.log
mail_fsync = always
mail_nfs_index = yes
mail_nfs_storage = yes
mail_plugins = quota  listescape mail_log notify
mdbox_rotate_interval = 1 days
mdbox_rotate_size = 10 M
mmap_disable = yes
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix =
  separator = /
}
passdb {
  args = /etc/dovecot/conf.d/dovecot-sql.conf.ext
  driver = sql
}
passdb {
  args = /etc/dovecot/conf.d/dovecot-sqlSSO.conf.ext
  driver = sql
}
plugin {
  fts = solr
  fts_solr = break-imap-search url=http://147.162.10.96:8983/solr/
  mail_log_events = delete undelete expunge copy mailbox_delete
mailbox_rename
  mail_log_fields = uid box msgid size
  pop3_migration_mailbox = INBOX
  quota = dict:User quota::file:/SYSTEM/USERS/homes/%d/%1u/%u/%u.quota
  quota_rule = *:storage=1100M
  quota_rule2 = Trash:storage=+100M
  quota_warning = storage=95%% quota-warning 95 %u
  quota_warning2 = storage=80%% quota-warning 80 %u
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
pop3c_host = 147.162.10.68
protocols = imap pop3 lmtp
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-userdb {
    group = vmail
    mode = 0600
    user = vmail
  }
}
service imap-login {
  inet_listener imaps {
    ssl = no
  }
  process_min_avail = 20
  service_count = 1
}
service imap {
  executable = imap postlogin
}
service lmtp {
  executable = lmtp
  inet_listener lmtp {
    port = 2223
  }
  process_min_avail = 15
}
service pop3-login {
  inet_listener pop3s {
    ssl = no
  }
}
service postlogin {
  executable = script-login -d rawlog
  user = vmail
}
service quota-warning {
  executable = script /SYSTEM/DOVECOT/scripts/quota-warning.sh
  unix_listener quota-warning {
    user = vmail
  }
  user = vmail
}
ssl = no
userdb {
  driver = prefetch
}
userdb {
  args = /etc/dovecot/conf.d/dovecot-sql.conf.ext
  driver = sql
}
userdb {
  driver = prefetch
}
userdb {
  args = /etc/dovecot/conf.d/dovecot-sqlSSO.conf.ext
  driver = sql
}
protocol lmtp {
  info_log_path = /tmp/dovecot-lmtp-info.log
  log_path = /tmp/dovecot-lmtp.log
  mail_plugins = quota  listescape mail_log notify
}
protocol imap {
  imap_max_line_length = 128 k
  mail_plugins = quota  listescape mail_log notify imap_quota
}
protocol doveadm {
  mail_plugins = quota  listescape mail_log notify pop3_migration
}
protocol pop3 {
  pop3_no_flag_updates = yes
  pop3_uidl_format = %10v.%09u
}



-- 

     Ing. Giorgio Paolucci
     Universita' di Padova
     Centro Servizi Informatici di Ateneo
     Responsabile Infrastrutture,
     Networking e Sicurezza
     Tel.+39-049-8273711

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