POSTFIX : Temporary failure in name resolution
Hi to everyone's,
I run a postfix server into Debian/GNU 6.0 Linux server 2.6.32-5-amd64. The bug is that it seems run slow(from client point of view) when it send email from out of LAN where it's hosts the postfix server, that when It sended from within LAN where postfix is hosted.
I have observed, what look like a warning about of domain resolution :
Code:
May 15 13:03:35 server postfix/smtpd[17364]: warning: ??.??.??.??: hostname 110.Red-13-33-22.dynamicIP.rima-tde.net verification failed: Temporary failure in name resolution
May 15 13:03:35 server postfix/smtpd[17364]: connect from unknown[??.??.??.??]
May 15 13:03:38 server postfix/smtpd[17364]: 17448100064: client=unknown[??.??.??.??], sasl_method=PLAIN, sasl_username=email
May 15 13:03:38 server postfix/cleanup[17367]: 17448100064: message-id=<1305457557.2500.0.email>
May 15 13:03:38 server postfix/qmgr[2169]: 17448100064: from=<email>, size=532, nrcpt=1 (queue active)
May 15 13:03:38 server postfix/virtual[17368]: 17448100064: to=<email>, relay=virtual, delay=0.53, delays=0.51/0/0/0.02, dsn=2.0.0, status=sent (delivered to maildir)
May 15 13:03:38 server postfix/qmgr[2169]: 17448100064: removed
May 15 13:03:39 server postfix/smtpd[17364]: disconnect from unknown[??.??.??.??]]
I like know, if this bug could cause the delay that I perceive when email is sended ?
Code:
$> s postconf -n
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
html_directory = /usr/share/doc/postfix/html
inet_interfaces = all
local_recipient_maps = $virtual_mailbox_maps
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
mydestination = $myhostname, localhost.$myhostname, localhost
mydomain = ??????????.org
myhostname = server.??????????.org
myorigin = $mydomain
readme_directory = /usr/share/doc/postfix
recipient_delimiter = +
relayhost = ??????????.?????.org:2525
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options =
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_sasl_local_domain = server
smtpd_sasl_path = /var/spool/postfix/private/auth
smtpd_sasl_type = dovecot
smtpd_tls_CAfile = /etc/ssl/postfix/cacert.pem
smtpd_tls_cert_file = /etc/ssl/postfix/smtpd.crt
smtpd_tls_key_file = /etc/ssl/postfix/smtpd.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql/mapas_alias_virtuales_mysql.cf
virtual_gid_maps = static:1001
virtual_mailbox_base = /var/mail/virtual
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql/mapas_dominios_virtuales_mysql.cf
virtual_mailbox_limit = 0
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql/mapas_mailbox_virtuales_mysql.cf
virtual_minimum_uid = 1001
virtual_transport = virtual
virtual_uid_maps = static:1001
Code:
$> s cat master.cf
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (yes) (never) (100)
# ==========================================================================
smtp inet n - n - - smtpd
#submission inet n - - - - smtpd
# -o smtpd_tls_security_level=encrypt
-o smtpd_sasl_auth_enable=yes
-o smtpd_client_restrictions=permit_sasl_authenticated,reject_unauth_destination
# -o milter_macro_daemon_name=ORIGINATING
#smtps inet n - - - - smtpd
# -o smtpd_tls_wrappermode=yes
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#628 inet n - - - - qmqpd
pickup fifo n - - 60 1 pickup
cleanup unix n - - - 0 cleanup
qmgr fifo n - n 300 1 qmgr
#qmgr fifo n - - 300 1 oqmgr
tlsmgr unix - - - 1000? 1 tlsmgr
rewrite unix - - - - - trivial-rewrite
bounce unix - - - - 0 bounce
defer unix - - - - 0 bounce
trace unix - - - - 0 bounce
verify unix - - - - 1 verify
flush unix n - - 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - - - - smtp
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay unix - - - - - smtp
-o smtp_fallback_relay=
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - - - - showq
error unix - - - - - error
retry unix - - - - - error
discard unix - - - - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - - - - lmtp
anvil unix - - - - 1 anvil
scache unix - - - - 1 scache
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent. See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
# lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
# mailbox_transport = lmtp:inet:localhost
# virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus unix - n n - - pipe
# user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix - n n - - pipe
# flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
#
# ====================================================================
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
Best regards and thank very much.
