Exim Filter Rule

[bymizah]

I want to create a filter for exim.

if(recipient_domain=="abc.com" and sender_ipadress!="185.85.20.84"){
reject
}

Help needed for rule I need to write in /etc/system_filter.exim

 

[mxroute]

There's an easier way to do this:

echo "185.85.20.84" >> /etc/virtual/bad_sender_hosts_ip

 

[Richard G]

And double the protection by adding the domain too.
echo "*@abc.com" >> /etc/virtual/bad_sender_hosts

 

[bymizah]

I created a rule like below, but I need to add one more condition to this rule.
how can i run this rule only for incoming mails

if ("$h_to:, $h_cc:, $h_bcc" contains "@abc.com" and $message_headers does not contains "185.85.20.84" and $sender_address does not contains "@abc.com")
then
seen finish
endif

 

[Richard G]

I don't know. But much easier. If abc.com would do a little bit of work and use SPF and DKIM (and maybe DMARC) you wouldn't have to adjust all kind of things to block fake users of that domain from your system.

 

[bymizah]

The important thing here is that this rule only works for incoming e-mails. So I should say if $domain is not in /etc/virtual/domains folder