[CentOS] [SOLVED(ish)] Selective Sendmail Relaying.

Thu Dec 21 11:04:55 UTC 2006
Will McDonald <wmcdonald at gmail.com>

On 20/12/06, Kevan Benson <kbenson at a-1networks.com> wrote:
> On Wednesday 20 December 2006 08:30, Aleksandar Milivojevic wrote:
> > > I know, unfortunately I have a couple of thousand non-technical users
> > > already setup and I can't disrupt those.

With a few pointers from Aleksandar I got this sorted. I started today
with a clean slate and it's working, to be honest I'm not 100% sure
what's changed this time round, possibly just that I'm a bit more
clear headed in the light of day. :)

<------------------sendmail.mc------------------------->
divert(-1)dnl
dnl #
dnl # This is the sendmail macro config file for m4. If you make changes to
dnl # /etc/mail/sendmail.mc, you will need to regenerate the
dnl # /etc/mail/sendmail.cf file by confirming that the sendmail-cf package is
dnl # installed and then performing a
dnl #
dnl #     make -C /etc/mail
dnl #
dnl # $Id: sendmail.mc,v 1.3 2006/05/09 10:48:40 root Exp $
dnl #
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`setup for Red Hat Linux')dnl
OSTYPE(`linux')dnl
define(`SMART_HOST',`mailscanner.somedomain.com')
define(`confDEF_USER_ID',``8:12'')dnl
define(`confTO_CONNECT', `1m')dnl
define(`confTRY_NULL_MX_LIST',true)dnl
define(`confDONT_PROBE_INTERFACES',true)dnl
define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl
define(`ALIAS_FILE', `/etc/aliases')dnl
define(`STATUS_FILE', `/var/log/mail/statistics')dnl
define(`UUCP_MAILER_MAX', `2000000')dnl
define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl
define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl
define(`confAUTH_OPTIONS', `A')dnl
define(`confTO_IDENT', `0')dnl
FEATURE(`no_default_msa',`dnl')dnl
FEATURE(`smrsh',`/usr/sbin/smrsh')dnl
FEATURE(`mailertable',`hash -o /etc/mail/mailertable.db')dnl
FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable.db')dnl
FEATURE(redirect)dnl
FEATURE(always_add_domain)dnl
FEATURE(use_cw_file)dnl
FEATURE(use_ct_file)dnl
FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl
FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl
FEATURE(`relay_mail_from')dnl
FEATURE(`blacklist_recipients')dnl
EXPOSED_USER(`root')dnl
DAEMON_OPTIONS(`Port=smtp,Addr=192.168.24.112,Name=MTA')dnl
FEATURE(`accept_unresolvable_domains')dnl
LOCAL_DOMAIN(`willspc')dnl
MAILER(smtp)dnl
MAILER(procmail)dnl
<------------------sendmail.mc------------------------->

And

<------------------access------------------------->
#
# $Id: access,v 1.2 2006/12/21 11:02:53 root Exp $
#

localhost       RELAY
127.0.0.1       RELAY

From:test at testdom.com   RELAY
<------------------access------------------------->

Will.