Postfix Transport Problem

mattclements · 05-20-2009, 06:32 AM

Hello,
I have been setting up a new server (mail.domain.com) to redirect mail to server1.domain.com and server2.domain.com depending on the domain the mail is sent to. I.e.

MX Record to mail.domain.com
Mail sent to hello.com -----------------------------> mail.domain.com uses Transport DB to redirect hello.com to server2.domain.com where another SMTP Server exists.

postconf -n

Code:

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
mydestination = /etc/postfix/local-host-names
myhostname = mail.domain.com
mynetworks = <<-Outside Domain->>, 127.0.0.0
myorigin = $mydomain
recipient_delimiter = +
relayhost = hello.com
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtpd_use_tls = yes
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 450

master.cf

Code:

smtp      inet    n     -       n       -       -       smtpd -o content_filter=spamassassin

......

spamassassin
          unix  -       n       n       -       -       pipe
   flags=Rq user=nobody argv=/var/spamassassin/filter.sh -oi -f ${sender} ${recipient}

filter.sh

Code:

#!/bin/sh

# filter.sh
#
# This script redirects mail flagged as spam to a separate account
# You must first create a user account named "spamvac" to hold the flagged mail

SENDMAIL="/usr/sbin/sendmail -i"
SPAMASSASSIN=/usr/bin/spamc
COMMAND="$SENDMAIL $@"
#If your SQL preferences set to "user"
USER=`echo $COMMAND | awk '{ print $NF }' | sed 's/@.*$//'`
#If your SQL preferences set to "user@domain"
#USER=`echo $COMMAND | awk '{ print $NF }'`

NEW_COMMAND=`echo $COMMAND | awk '{ $6 = "spamvac"; NF = 6; print }'`

# Exit codes from <sysexits.h>
EX_TEMPFAIL=75
EX_UNAVAILABLE=69

umask 077

OUTPUT="`mktemp /tmp/mailfilter.XXXXXXXXXX`"

if [ "$?" != 0 ]; then
    /usr/bin/logger -s -p mail.warning -t filter "Unable to create temporary file."
    exit $EX_TEMPFAIL
fi

# Clean up when done or when aborting.
trap "rm -f $OUTPUT" EXIT TERM

$SPAMASSASSIN -x -E -u $USER > $OUTPUT
return="$?"
if [ "$return" = 1 ]; then
    $NEW_COMMAND < $OUTPUT
    exit $?
elif [ "$return" != 0 ]; then
    /usr/bin/logger -s -p mail.warning -t filter "Temporary SpamAssassin failure (spamc returned $return)"
    exit $EX_TEMPFAIL
fi

$SENDMAIL "$@" < $OUTPUT
exit $?

Error on Logfile when mail sent to user@hello.com

Code:

May 20 12:21:47 s15348938 postfix/smtpd[15898]: connect from queueout01-winn.ispmail.ntl.com[81.103.221.31]
May 20 12:21:47 s15348938 postfix/smtpd[15898]: NOQUEUE: reject: RCPT from queueout01-winn.ispmail.ntl.com[81.103.221.31]: 450 4.1.1 <user@hello.com>: Recipient address rejected: User unknown in loca$
May 20 12:21:47 s15348938 postfix/smtpd[15898]: disconnect from queueout01-winn.ispmail.ntl.com[81.103.221.31]

transport db

Code:

hello.com      smtp:server2.domain.com

Sorry there is a lot of code etc there.
Basically:
hello.com is the domain that should redirect
server1 & server2.domain.com are the servers that the mail should be redirected to
mail.domain.com is the redirecting server which I am having problems with (with SpamAssassin filter)

I seem to think that the mail arrives at mail.domain.com, and Postfix can't work out where to route the mail to.

Regards,
Matt

mattclements · 05-20-2009, 09:44 AM

<<-Outside Domain->> is meant to say Outside IP - this is the external IP

archangel_617b · 05-20-2009, 10:24 AM

You have "relayhost" set to "hello.com", I think you may mean "relay_domains". The "relayhost" is for smarthosts.

- Arch

mattclements · 05-20-2009, 12:44 PM

Nope - Afraid still getting the problem.

Code:

450 4.1.1 <user@hello.com>: Recipient address rejected: User unknown in local recipient table;

I seem to think that the Postfix Configuation doesn't seem to look properly at the Transport DB?!

Cheers,
Matt

archangel_617b · 05-20-2009, 01:14 PM

Can you give a fresh postconf -n and the contents of "/etc/postfix/local-host-names"?

- Arch

archangel_617b · 05-20-2009, 01:15 PM

And just FYI, this is a great doc if you haven't read through it already:

http://www.postfix.org/BASIC_CONFIGURATION_README.html

- Arch

mattclements · 05-20-2009, 02:12 PM

Sorted thanks!
I just looked through the main.cf config file - as this server should never look at local mail users and thats all it seemed to be doing - and I came to this which worked!

Code:

append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
local_recipient_maps =
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
myhostname = mail.domain.com
mynetworks = <<Outside IP>>, 127.0.0.0
recipient_delimiter = +
relay_domains = hello.com
relayhost =
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtpd_use_tls = yes
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 450