sendmail and spamassassin

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I would highly recommend you use MailScanner.  http://www.mailscanner.info
You could be up and running in a matter of minutes with SpamAssassin AND
ClamAV.

Mike
 

-----Original Message-----
From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf
Of Petr Kl?ma
Sent: Tuesday, June 28, 2005 12:35 AM
To: CentOS mailing list
Subject: Re:  sendmail and spamassassin

James B. Byrne napsal(a):
> I have a problem getting spamd and sendmail (both stock CentOS4 rpms) 
> to work together on a couple of smtp relay machines.  This is clearly 
> a configuration issue and no doubt revolves around my lack of 
> comprehension of how this is to work.
> 
> Basically, the setup consists of two frontend public smtp transports 
> that redirect all email through a firewall to an internal imap server 
> for final delivery.  The firewall and sendmail access map prohibit 
> connections to the imap server except for the local MX gateway.  The 
> external MX gateway is a fallback mx server that routes everything it 
> queues through the primary gateway.
> 
> So:
> 
> MX 2 routes to MX 1 that routes to IMAP
> 
> MX 2 and MX 1 are running spamd.
> 
> the sendmail.m4 file has the following at its very end:
> 
> dnl #
> dnl # MAILERs are always last after all FEATURES are defined 
> MAILER(smtp)dnl MAILER(procmail)dnl
> 
> 
> The contents of /etc/procmailrc are:
> 
> :0fw
> | /usr/bin/spamassassin
> 
> 
> Spamd is running on both.
> 
> There is a local configuration rule set in 
> /etc/mail/spamassassin/local.cf
> 

You need an milter interface instead of just procmail (it is local delivery
program)

My solution
====================================================================
Instalace
+++++++++
Milan Kerslager repository
ftp://ftp.linux.cz/pub/linux/people/milan_kerslager/RHEL-4/stable/
-----------------------------------------------
yum install clamav-milter clamav cvgfilter spamass-milter spamassassin
sendmail-cf
-----------------------------------------------


p?idej do startu systemu
-----------------------------------------------
/sbin/chkconfig clamd          on
/sbin/chkconfig freshclam      on
/sbin/chkconfig clamav-milter  on
/sbin/chkconfig cvgfilter      on
/sbin/chkconfig spamassassin   on
/sbin/chkconfig spamass-milter on
/sbin/chkconfig sendmail       on
-----------------------------------------------

Make helper scripts
-----------------------------------------------
echo '#!/bin/bash
/sbin/service freshclam start
/sbin/service clamd start
/sbin/service clamav-milter start
/sbin/service cvgfilter start
/sbin/service spamassassin start
/sbin/service spamass-milter start
/sbin/service sendmail start
' |cat >/root/bin/mail.start

echo '#!/bin/bash
/sbin/service sendmail stop
/sbin/service spamass-milter stop
/sbin/service spamassassin stop
/sbin/service cvgfilter stop
/sbin/service clamav-milter stop
/sbin/service clamd stop
/sbin/service freshclam stop
' | cat >/root/bin/mail.stop

echo '#!/bin/bash
/root/bin/mail.stop
/root/bin/mail.start
' | cat >/root/bin/mail.restart

chmod 700 /root/bin/mail.*
-----------------------------------------------

Configuration
+++++++++++++

Changes in /etc/mail/sendmail.mc
-----------------------------------------------
dnl # ven jde jen PEPA
dnl define(`SMART_HOST',`smtp.your.provider')
define(`SMART_HOST',`XXXXX')

dnl # Prilohy do 20M
dnl define(`UUCP_MAILER_MAX', `2000000')dnl define(`UUCP_MAILER_MAX',
`20000000')dnl

dnl # Trochu pozmenim chovani pri nedorucitelnosti dnl
define(`confTO_QUEUEWARN', `4h')dnl dnl define(`confTO_QUEUERETURN',
`5d')dnl dnl define(`confQUEUE_LA', `12')dnl dnl define(`confREFUSE_LA',
`18')dnl define(`confTO_QUEUEWARN', `6h')dnl define(`confTO_QUEUERETURN',
`2d')dnl define(`confQUEUE_LA', `12')dnl define(`confREFUSE_LA', `18')dnl

dnl # Not sure
dnl dnl FEATURE(always_add_domain)dnl
dnl FEATURE(always_add_domain)dnl

dnl # nebezpecne , spamoidni dnl
dnl dnl FEATURE(`accept_unresolvable_domains')dnl
dnl FEATURE(`accept_unresolvable_domains')dnl

dnl # Musime prijimat na vsech interfacech ... dnl
DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
-----------------------------------------------

and before mailers in /etc/mail/sendmail.mc
-----------------------------------------------
dnl # OPEN RELAY Check ... dnl
FEATURE(`dnsbl', `relays.ordb.org', `"550 Email rejected due to sending
server misconfiguration - see http://www.ordb.org/faq/\#why_rejected";')dnl

dnl # clamav-milter - z README ... dnl
INPUT_MAIL_FILTER(`clamav-milter',`S=local:/var/run/clamav/clamav-milter.soc
k,
F=,T=S:4m;R:4m;E:10m')dnl

dnl # CVGFILTER - z README ... dnl
define(`_FFR_MILTER', `1')dnl
INPUT_MAIL_FILTER(`cvgfilter', `S=unix:/var/run/cvgfilter.sock, F=T')dnl

dnl # SPAMASSASSIN dnl
INPUT_MAIL_FILTER(`spamassassin', `S=local:/var/run/spamass.sock, F=,
T=C:15m;S:4m;R:4m;E:10m')dnl define(`confMILTER_MACROS_CONNECT',`b, j, _,
{daemon_name}, {if_name}, {if_addr}')dnl
-----------------------------------------------

/etc/sysconfig/clamav-milter
-----------------------------------------------
CLAMAV_FLAGS="--max-children=80 --force-scan  -HP -p viry@xxxxxxxxx
--server=localhost local:/var/run/clamav/clamav-milter.sock"
-----------------------------------------------

/etc/mail/spamassassin/local.cf
-----------------------------------------------
# These values can be overridden by editing ~/.spamassassin/user_prefs.cf #
(see spamassassin(1) for details)

# These should be safe assumptions and allow for simple visual sifting #
without risking lost emails.

required_hits 5
report_safe 0
rewrite_header Subject [SPAM]

# additional
rewrite_subject 1
subject_tag [SPAM]

fold_headers 0

#clear_headers
remove_header all Report
#remove_header all Status
#remove_header all Level
#remove_header all Flag

#add_header    all Status  _YESNOCAPS_ , _STARS(*)_, hits=_HITS_ 
required=_REQD_
-----------------------------------------------

========================================================================

/root/bin/mail.restart and enjoy the show ...


-- 

    Petr Kl?ma

    JIHOMILK a.s.
    Rudolfovsk? 246/83
    370 50 ?esk? Bud?jovice
    Czech Rpublic

    phone:   +420 389 136 209
    e-mail:  petr.klima@xxxxxxxxxxx


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