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Old 05-15-2006, 10:29 PM   #1
Registered: Nov 2004
Location: Townsville, Australia
Distribution: Fedora Core 5, CentOS 4, RHEL 4
Posts: 855

Rep: Reputation: 30
add header information to outgoing e-mails - postfix

hi there,

i'm running a RHEL4, postfix, bitdefender mail setup at the moment.

i'm trying to get postfix to mark every e-mail header sent from postfix with this line.

X-Trusted-localdomain: yes

I've added the following two lines to the /etc/postfix/ file

smtpd_data_restrictions = check_client_access

and then add the following information to the /etc/postfix/add_local_header file.

# add_local_header
# list all local networks here PREPEND X-Trusted-localdomain: yes

but it seams to add that header to all e-mails comming into my system from an outside mail server, I just want to add that to the e-mails leaving my mail server.

Can someone help me out?

here is my postconf -n

alias_maps = hash:/etc/aliases, hash:/etc/postfix/ldap-aliases, hash:/var/lib/mailman/data/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = smtp:
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
fallback_transport = procmail
hash_queue_names = incoming,active, deferred, bounce, defer, flush, hold, trace
html_directory = no
local_recipient_maps = unixasswd.byname $alias_maps hash:/etc/postfix/usernames_forlocalmaps
mailbox_command = /usr/bin/procmail
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, $mydomain
myhostname =
mynetworks =,,
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
readme_directory = /usr/share/doc/postfix-2.1.5/README_FILES
recipient_delimiter = +
sample_directory = /usr/share/doc/postfix-2.1.5/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
unknown_local_recipient_reject_code = 550

Last edited by paul_mat; 05-15-2006 at 10:30 PM.
Old 05-16-2006, 05:39 AM   #2
Registered: Sep 2004
Location: Texas, USA
Distribution: Fedora
Posts: 620

Rep: Reputation: 31
I haven't tried the method of adding header info as you have shown, but I stop spamassassin from processing outbound e-mail by adding "permit_mynetworks" BEFORE the call to the spamassassin filter? So using your example, try:

smtpd_data_restrictions =
check_client_access cidr:/etc/postfix/add_local_header


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