i did a port forwarding for all smtp port 25 to my internal server, i also need to deny some specific public ip from accessing to my internal email server.
looking for your help
Hi @FishMan
This would be configured under your Outbound Firewall rules. Set the destination as the Public IP you want to block and the source as your email server.
Hi UCcert,
thanks a lot, will try to do this, but it's about more than 10 public that i want to block would it ok
That shouldn’t be a problem @FishMan
@DarrenOCI would not expect this to work. When the connection is coming from the outside it is inspected statefully and the outbound rules are not applied any more to this traffic.
Group policy fw rules are stateless. In case the statefull mx fw rules does not work you can try those
Just tried it: The Group-Policy approach works!
can you share how to do this
You have to: