Centos 7 : Setup Spamassassin

[Untouchable]

All steps that described bellow, tested and working on Centos 7 Vps + Sentora 1.0.0

1. Before we start, lets check for updates

Code:

su -c 'yum update'

2. Let's install now spamassassin, ( about 10mb )

Code:

sudo yum install spamassassin

3. Time for configuration

Code:

sudo nano /etc/mail/spamassassin/local.cf

You have to add the following lines, if already there just uncoment #

Code:

rewrite_header Subject ***SPAM***

Code:

required_hits 5.0

Code:

report_safe 0

Code:

required_score 5

Required_hits 5 is for small mail serv. You can increase it more if you need
Report_safe is on 0 here, but you can change to 1 or 2 ( see spamassassin guides )
Rewrite_header we call it ***SPAM*** here, you can call it as you want
Required_score can set form 0 -> 5 depends what you need

4. Now let's create a unique user and group

Code:

sudo groupadd spamd

Code:

sudo useradd -g spamd -s /bin/false -d /var/log/spamassassin spamd

Code:

sudo chown spamd:spamd /var/log/spamassassin

5. Configure the Postfix master.cf file to use the SpamAssassin

Code:

sudo nano /etc/postfix/master.cf

About line 11 in top add after smtpd

Code:

-o content_filter=spamassassin

Full line looks like that

Code:

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

And the end - bottom add

Code:

spamassassin unix - n n - - pipe flags=R user=spamd argv=/usr/bin/spamc -e /usr/sbin/sendmail -oi -f ${sender} ${recipient}

6. Update spamassassin rules

Code:

sa-update --nogpg

7. Restart postfix - spamassassin

Code:

systemctl restart spamassassin

Code:

systemctl restart postfix

8. Check if spamassassin is listening

Code:

ss -tnlp | grep spamd

9. Test : create and send an email from external mail service with subject

Code:

XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X

On roundcube webmail it will be marked as spam.

Test spam message to see if it works : http://spamassassin.apache.org/gtube/

[Smile]

Thank you so mutch for this! But when i add the 2 lines to the master.cfg i dont getty any mail anymore.

[Untouchable]

Thank you so mutch for this! But when i add the 2 lines to the master.cfg i dont getty any mail anymore.

On master.cf on line 11 default is

Code:

smtp      inet  n       -       n       -       -       smtpd

After modification must be like this

Code:

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

Also carefully on the end of master.cf add line

Code:

spamassassin unix - n n - - pipe flags=R user=spamd argv=/usr/bin/spamc -e /usr/sbin/sendmail -oi -f ${sender} ${recipient}

Double check all lines - steps and dont forget to restart services!!!

[mostafiz]

its work good

[bbspike]

Maybe add systemctl enable spamassassin in your tut.

[JElder]

After following this tut, everything runs and works.  However, while running spamassassin, my cpu is hitting 100% all the time.  spamd is guilty according to top.  

Any suggestions would be appreciated.

Thanks,

John

[TGates]

I know this is not what you want to hear... But, this is not a Sentora issue. I suggest checking spamassassin site or searching on Google or whatever search you use.
Many others with same issue apparently:
https://www.google.com/search?q=spamassa...8&oe=utf-8

Please post back a solution that worked for you to help other Thanks!

[rajinik.qa]

All steps that described bellow, tested and working on Centos 7 Vps + Sentora 1.0.0

1. Before we start, lets check for updates

Code:

su -c 'yum update'

2. Let's install now spamassassin, ( about 10mb )

Code:

sudo yum install spamassassin

3. Time for configuration

Code:

sudo nano /etc/mail/spamassassin/local.cf

You have to add the following lines, if already there just uncoment #

Code:

rewrite_header Subject ***SPAM***

Code:

required_hits 5.0

Code:

report_safe 0

Code:

required_score 5

Required_hits 5 is for small mail serv. You can increase it more if you need
Report_safe is on 0 here, but you can change to 1 or 2 ( see spamassassin guides )
Rewrite_header we call it ***SPAM*** here, you can call it as you want
Required_score can set form 0 -> 5 depends what you need

4. Now let's create a unique user and group

Code:

sudo groupadd spamd

Code:

sudo useradd -g spamd -s /bin/false -d /var/log/spamassassin spamd

Code:

sudo chown spamd:spamd /var/log/spamassassin

5. Configure the Postfix master.cf file to use the SpamAssassin

Code:

sudo nano /etc/postfix/master.cf

About line 11 in top add after smtpd

Code:

-o content_filter=spamassassin

Full line looks like that

Code:

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

And the end - bottom add

Code:

spamassassin unix - n n - - pipe flags=R user=spamd argv=/usr/bin/spamc -e /usr/sbin/sendmail -oi -f ${sender} ${recipient}

6. Update spamassassin rules

Code:

sa-update --nogpg

7. Restart postfix - spamassassin

Code:

systemctl restart spamassassin

Code:

systemctl restart postfix

8. Check if spamassassin is listening

Code:

ss -tnlp | grep spamd

9. Test : create and send an email from external mail service with subject

Code:

XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X

On roundcube webmail it will be marked as spam.

Test spam message to see if it works : http://spamassassin.apache.org/gtube/

hello,
I have followed above steps and i believe, setup is done. However i dont see the serve enabled on my services tab on VPS. what could b the reason?
Below is what i see after point 8, is this correct? please advise, thanks
=================
[root@mail ~]# ss -tnlp | grep spamd
LISTEN 0 128 127.0.0.1:783 *:* users("spamd child",3319,5),("spamd child",3318,5),(" /usr/bin/spamd ",3317,5))
LISTEN 0 128 ::1:783 :::* users("spamd child",3319,6),("spamd child",3318,6),(" /usr/bin/spamd ",3317,6))
=============================================
thanks

[chongma]

Hi, this doesn't seem to include Bayesian filtering using mysql db or moving spam directly to junk folder. Also we should consider automating all this as part of sentora installation?