From: Bernhard D Rohrer (graylionsm-wg.net)
Date: Wed Feb 06 2008 - 13:39:19 CST

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mouss wrote:
> Bernhard D Rohrer wrote:
>> Hi folks
>>
>> I somehow cannot send local mail, ie to users on the same MTA
>>
>> I get
>>
>> Feb 6 18:00:57 collab postfix/smtp[5114]: 4C4322D0D93:
>> to=<bernharddomain.tld>, relay=none, delay=2692, status=deferred
>> (connect to 127.0.0.1[127.0.0.1]: Connection refused)
>
> postfix tried to talk to something on localhost (content filter?) and it
> could not. show master.cf. a possible error is that your postfix is
> configured to open too many connections to the content filter.

rootcollab:/var/log# cat /etc/postfix/master.cf
#
# Postfix master process configuration file. For details on the format
# of the file, see the Postfix master(5) manual page.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (yes) (never) (100)
# ==========================================================================
smtp inet n - - - - smtpd
#submission inet n - - - - smtpd
# -o smtpd_etrn_restrictions=reject
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#smtps inet n - - - - smtpd
# -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes
#submission inet n - - - - smtpd
# -o smtpd_etrn_restrictions=reject
# -o smtpd_enforce_tls=yes -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#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
smtp unix - - - - - smtp
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay unix - - - - - smtp
         -o fallback_relay=
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - - - - showq
error unix - - - - - error
discard unix - - - - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - n - - 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 ${recipient}
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
   flags=Fqhu user=uucp argv=uux -r -n -z -a$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}
policy unix - n n - - spawn
   user=nobody argv=/usr/bin/perl
/usr/share/perl5/Mail/postfix-policyd-spf.pl
#
# Before-filter SMTP server. Receive mail from the network and
# pass it to the content filter on localhost port 10025.
#
smtp inet n - n - - smtpd
     -o smtpd_proxy_filter=127.0.0.1:10025
     -o smtpd_client_connection_count_limit=20
     -o content_filter=dksign:[127.0.0.1]:10027
#
# After-filter SMTP server. Receive mail from the content filter on
# localhost port 10026.
#
127.0.0.1:10026 inet n - n - - smtpd
     -o smtpd_authorized_xforward_hosts=127.0.0.0/8
     -o smtpd_client_restrictions=
     -o smtpd_helo_restrictions=
     -o smtpd_sender_restrictions=
     -o smtpd_recipient_restrictions=permit_mynetworks,reject
     -o smtpd_data_restrictions=
     -o mynetworks=127.0.0.0/8,192.168.0.0/16
     -o receive_override_options=no_unknown_recipient_checks
#
# modify the default submission service to specify a content filter
# and restrict it to local clients and SASL authenticated clients only
#
submission inet n - n - - smtpd
     -o smtpd_etrn_restrictions=reject
     -o smtpd_sasl_auth_enable=yes
     -o smtpd_enforce_tls=yes
     -o content_filter=dksign:[127.0.0.1]:10027
     -o receive_override_options=no_address_mappings
     -o smtpd_recipient_restrictions=permit_sasl_authenticated,reject
#
# specify the location of the DomainKeys signing filter
#
dksign unix - - n - 10 smtp
     -o smtp_send_xforward_command=yes
     -o smtp_discard_ehlo_keywords=8bitmime
#
# service for accepting messages FROM the DomainKeys signing filter
#
127.0.0.1:10028 inet n - n - 10 smtpd
     -o content_filter=
     -o
receive_override_options=no_unknown_recipient_checks,no_header_body_checks
     -o smtpd_helo_restrictions=
     -o smtpd_client_restrictions=
     -o smtpd_sender_restrictions=
     -o smtpd_recipient_restrictions=permit_mynetworks,reject
     -o mynetworks=127.0.0.0/8,192.168.0.0/16
     -o smtpd_authorized_xforward_hosts=127.0.0.0/8

sublion inet n - n - - smtpd
     -o smtpd_etrn_restrictions=reject
     -o smtpd_sasl_auth_enable=yes
     -o smtpd_enforce_tls=no
     -o content_filter=dksign:[127.0.0.1]:10027
     -o receive_override_options=no_address_mappings
     -o
smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject

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