Mik's questions

I have added many rich rule with something like this:

 firewall-cmd --permanent --zone="thezone" --add-rich-rule='rule family=ipv4 source address=1.2.3.4 reject'

And now I would like to clear/remove all those rich rules in my "thezone" zone.

Also y try to remove line for line with :

 firewall-cmd --permanent --zone="thezone" --remove-rich-rule='rule family=ipv4 source address=1.2.3.4 reject'

or

 firewall-cmd --permanent --zone="thezone" --remove-rich-rule='rule family=ipv4 source address=1.2.3.4 accept'

or

 firewall-cmd --permanent --zone="thezone" --add-rich-rule='rule family=ipv4 source address=1.2.3.4 accept'

with the firewall-cmd --reload and still haven't succeed.

Can Anyone tell me how to clear all or tell what i'm doing wrong with one by one method?

I would like to know how to block an IP to use smtp service on a server with centos 7 firewall . I try to use something like this :

   firewall-cmd --permanent --zone="public" --add-rich-rule='rule family=ipv4 source address=[ipadress] --remove-service=smtp'

but is not the right syntax

Or should I block the TCP ports 25, 465 and 587?

also if anyone could tell me how to automatically do this getting de ip from a file (if possible) would be great