CentOS - Aug 2014 - Use postfix and spamd on CentOS 6 - looking for a shortest guide

whats your database user in spamd.conf?

Adam King 
IT Systems Administrator 
Skipton Girls High School 
01756 707600 
www.sghs.org.uk 

----- Original Message -----
From: "Alexander Farber" <alexander.farber at gmail.com>
To: "CentOS mailing list" <centos at centos.org>
Sent: Monday, August 11, 2014 12:38:09 PM
Subject: [CentOS] Use postfix and spamd on CentOS 6 - looking for a shortest
guide

Hello fellow CentOS-users,

on the net there are lots of Spamassassin related HOWTOs - describing how
to create a shell script for Postfix and how to install Spamassassin and
start its spamd daemon - step by step. Additionally antivirus setups are
described...

But I have a strong feeling, that this is unneeded on CentOS 6 - because
there are already preconfigured stock packages for postfix and spamassassin.

So I have installed the both packages and I have configured postfix (it
works fine).

Also I have started the spamd (and can see it in "ps uawx") with:

    # chkconfig spamassassin on
    # service spamassassin start

So I'm just missing the connection between postfix and spamd.

Could anybody using these 2 programs on CentOS 6 please share it with me?

Should I add something (involving spamc?) into /etc/postfix/master.cf?

Thank you
Alex

P.S. Below is my "postconf -n". I accept mails (here I'd like to
filter
spam) for 6 virtual domains and then forward them to different GMail
accounts:

alias_database = hash:/etc/aliases

alias_maps = hash:/etc/aliases

command_directory = /usr/sbin

config_directory = /etc/postfix

daemon_directory = /usr/libexec/postfix

data_directory = /var/lib/postfix

debug_peer_level = 2

header_checks = pcre:/etc/postfix/header_checks

html_directory = no

inet_interfaces = all

inet_protocols = ipv4

mail_owner = postfix

mailq_path = /usr/bin/mailq.postfix

manpage_directory = /usr/share/man

mydestination = $myhostname, localhost.$mydomain, localhost

myhostname = www.afarber.de

newaliases_path = /usr/bin/newaliases.postfix

queue_directory = /var/spool/postfix

readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES

sample_directory = /usr/share/doc/postfix-2.6.6/samples

sendmail_path = /usr/sbin/sendmail.postfix

setgid_group = postdrop

smtp_destination_concurrency_limit = 2

smtp_destination_rate_delay = 40s

smtp_generic_maps = hash:/etc/postfix/generic

unknown_local_recipient_reject_code = 550

virtual_alias_domains = videoskat.de balkan-preferans.de simplex.ru
larissa-farber.de bukvy.de slova.de

virtual_alias_maps = hash:/etc/postfix/virtual
_______________________________________________
CentOS mailing list
CentOS at centos.org
http://lists.centos.org/mailman/listinfo/centos

Hello fellow CentOS-users,

on the net there are lots of Spamassassin related HOWTOs - describing how
to create a shell script for Postfix and how to install Spamassassin and
start its spamd daemon - step by step. Additionally antivirus setups are
described...

But I have a strong feeling, that this is unneeded on CentOS 6 - because
there are already preconfigured stock packages for postfix and spamassassin.

So I have installed the both packages and I have configured postfix (it
works fine).

Also I have started the spamd (and can see it in "ps uawx") with:

    # chkconfig spamassassin on
    # service spamassassin start

So I'm just missing the connection between postfix and spamd.

Could anybody using these 2 programs on CentOS 6 please share it with me?

Should I add something (involving spamc?) into /etc/postfix/master.cf?

Thank you
Alex

P.S. Below is my "postconf -n". I accept mails (here I'd like to
filter
spam) for 6 virtual domains and then forward them to different GMail
accounts:

alias_database = hash:/etc/aliases

alias_maps = hash:/etc/aliases

command_directory = /usr/sbin

config_directory = /etc/postfix

daemon_directory = /usr/libexec/postfix

data_directory = /var/lib/postfix

debug_peer_level = 2

header_checks = pcre:/etc/postfix/header_checks

html_directory = no

inet_interfaces = all

inet_protocols = ipv4

mail_owner = postfix

mailq_path = /usr/bin/mailq.postfix

manpage_directory = /usr/share/man

mydestination = $myhostname, localhost.$mydomain, localhost

myhostname = www.afarber.de

newaliases_path = /usr/bin/newaliases.postfix

queue_directory = /var/spool/postfix

readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES

sample_directory = /usr/share/doc/postfix-2.6.6/samples

sendmail_path = /usr/sbin/sendmail.postfix

setgid_group = postdrop

smtp_destination_concurrency_limit = 2

smtp_destination_rate_delay = 40s

smtp_generic_maps = hash:/etc/postfix/generic

unknown_local_recipient_reject_code = 550

virtual_alias_domains = videoskat.de balkan-preferans.de simplex.ru
larissa-farber.de bukvy.de slova.de

virtual_alias_maps = hash:/etc/postfix/virtual

Ha what a co-incidence, just did this an hour ago
I roughly followed this
http://www.rosehosting.com/blog/how-to-install-and-integrate-spamassassin-with-postfix-on-a-centos-6-vps/

my master.cf looks like this

spamassassin unix -     n       n       -       -       pipe
  user=nobody argv=/usr/bin/spamc -f -e
  /usr/sbin/sendmail -oi -f ${sender} ${recipient}

I also have these

policy_spf  unix  -       n       n       -       9       spawn
  user=nobody argv=/usr/bin/perl /etc/postfix/policy_spf_d.pl
policy_grey  unix  -       n       n       -       9       spawn
  user=nobody argv=/usr/bin/perl /etc/postfix/policy_greylist_d.pl


In my case I only want to filter through spamassassin is spf doesn't pass
so I hacked the policy_spf_d

#  else                       { return "DUNNO"; }
  else                       { return "FILTER spamassassin:scanner"; }


Just watch out, if you filter all the mail using
content_filter=spamassassin
you will create a mail loop unless you use a content filter bypass on mail
coming back from spamassassin.

dave.



On Mon, Aug 11, 2014 at 9:38 PM, Alexander Farber <
alexander.farber at gmail.com> wrote:
> Hello fellow CentOS-users,
>
> on the net there are lots of Spamassassin related HOWTOs - describing how
> to create a shell script for Postfix and how to install Spamassassin and
> start its spamd daemon - step by step. Additionally antivirus setups are
> described...
>
> But I have a strong feeling, that this is unneeded on CentOS 6 - because
> there are already preconfigured stock packages for postfix and
> spamassassin.
>
> So I have installed the both packages and I have configured postfix (it
> works fine).
>
> Also I have started the spamd (and can see it in "ps uawx") with:
>
>     # chkconfig spamassassin on
>     # service spamassassin start
>
> So I'm just missing the connection between postfix and spamd.
>
> Could anybody using these 2 programs on CentOS 6 please share it with me?
>
> Should I add something (involving spamc?) into /etc/postfix/master.cf?
>
> Thank you
> Alex
>
> P.S. Below is my "postconf -n". I accept mails (here I'd like
to filter
> spam) for 6 virtual domains and then forward them to different GMail
> accounts:
>
> alias_database = hash:/etc/aliases
>
> alias_maps = hash:/etc/aliases
>
> command_directory = /usr/sbin
>
> config_directory = /etc/postfix
>
> daemon_directory = /usr/libexec/postfix
>
> data_directory = /var/lib/postfix
>
> debug_peer_level = 2
>
> header_checks = pcre:/etc/postfix/header_checks
>
> html_directory = no
>
> inet_interfaces = all
>
> inet_protocols = ipv4
>
> mail_owner = postfix
>
> mailq_path = /usr/bin/mailq.postfix
>
> manpage_directory = /usr/share/man
>
> mydestination = $myhostname, localhost.$mydomain, localhost
>
> myhostname = www.afarber.de
>
> newaliases_path = /usr/bin/newaliases.postfix
>
> queue_directory = /var/spool/postfix
>
> readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
>
> sample_directory = /usr/share/doc/postfix-2.6.6/samples
>
> sendmail_path = /usr/sbin/sendmail.postfix
>
> setgid_group = postdrop
>
> smtp_destination_concurrency_limit = 2
>
> smtp_destination_rate_delay = 40s
>
> smtp_generic_maps = hash:/etc/postfix/generic
>
> unknown_local_recipient_reject_code = 550
>
> virtual_alias_domains = videoskat.de balkan-preferans.de simplex.ru
> larissa-farber.de bukvy.de slova.de
>
> virtual_alias_maps = hash:/etc/postfix/virtual
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>

Am 2014-08-11 13:38, schrieb Alexander Farber:
> Hello fellow CentOS-users,
> 
> on the net there are lots of Spamassassin related HOWTOs - describing 
> how
> to create a shell script for Postfix and how to install Spamassassin 
> and
> start its spamd daemon - step by step. Additionally antivirus setups 
> are
> described...
> 
> But I have a strong feeling, that this is unneeded on CentOS 6 - 
> because
> there are already preconfigured stock packages for postfix and 
> spamassassin.
> 
> So I have installed the both packages and I have configured postfix (it
> works fine).
> 
> Also I have started the spamd (and can see it in "ps uawx") with:
> 
>     # chkconfig spamassassin on
>     # service spamassassin start
> 
> So I'm just missing the connection between postfix and spamd.
> 
> Could anybody using these 2 programs on CentOS 6 please share it with 
> me?
[ ... ]

Do yourself a favour and use a milter instead of piping each single mail 
through spamassassin.

http://pkgs.org/centos-6/epel-x86_64/spamass-milter-0.3.2-3.el6.x86_64.rpm.html

Then add something like

smtpd_milters = unix:/var/run/spamass-milter/postfix/sock 
inet:127.0.0.1:8891
non_smtpd_milters = $smtpd_milters
milter_default_action = accept

to your Postfix' main.cf and configure the milter flags in 
/etc/sysconfig/spamass-milter.
> Thank you
> Alex
[ ... ]

Alexander