430 Authentication required (in reply to MAIL FROM command

[A Clockwork Orange]

I use postfix and cyrus

Sometimes i've got follow messages
[/public/socket/lmtp] said: 430 Authentication required (in reply to
MAIL FROM command)
The letters can stay in queue with this message or cont. to recipient
without mesages

What does it mean.



# cat /etc/imapd.conf
# $OpenBSD: imapd.conf,v 1.1.1.1 2005/03/27 18:01:50 alek Exp $
# imapd.conf(5)

configdirectory: /var/imap
partition-default: /var/spool/imap
sievedir: /var/sieve
sendmail: /usr/sbin/sendmail
admins: admin
#lmtpsocket: /var/imap/socket/lmtp
lmtp_downcase_rcpt: 1
sasl_pwcheck_method: auxprop
sasl_auxprop_plugin: sasldb
#sasldb_path: /etc/sasldb2.db
sasl_mech_list: PLAIN LOGIN DIGEST-MD5 CRAM-MD5
virtdomains: userid
defaultdomain: s.ru
loginrealms: s.ru c.ru
#


# cat /etc/cyrus.conf
# standard standalone server implementation

START {
  # do not delete this entry!
  recover       cmd="ctl_cyrusdb -r"

  # this is only necessary if using idled for IMAP IDLE
#  idled                cmd="idled"
}

# UNIX sockets start with a slash and are put into /var/imap/socket
SERVICES {
  # add or remove based on preferences
  imap          cmd="imapd" listen="imap" prefork=0
  imaps         cmd="imapd -s" listen="imaps" prefork=0
  pop3          cmd="pop3d" listen="pop3" prefork=0
  pop3s         cmd="pop3d -s" listen="pop3s" prefork=0
  sieve         cmd="timsieved -d" listen="sieve" prefork=0

  # these are only necessary if receiving/exporting usenet via NNTP
#  nntp         cmd="nntpd" listen="nntp" prefork=0
#  nntps                cmd="nntpd -s" listen="nntps" prefork=0

  # at least one LMTP is required for delivery
#  lmtp         cmd="lmtpd" listen="lmtp" prefork=0
#  lmtpunix     cmd="lmtpd" listen="/var/imap/socket/lmtp" prefork=0
  lmtpunix      cmd="lmtpd" listen="/var/spool/postfix/public/socket/lmtp" prefork=0

  # this is only necessary if using notifications
#  notify       cmd="notifyd" listen="/var/imap/socket/notify" proto="udp" prefork=1
}

EVENTS {
  # this is required
  checkpoint    cmd="ctl_cyrusdb -c" period=30

  # this is only necessary if using duplicate delivery suppression,
  # Sieve or NNTP
  delprune      cmd="cyr_expire -E 3" at=0400

  # this is only necessary if caching TLS sessions
  tlsprune      cmd="tls_prune" at=0400
}
#