Hello,
I search on this forum, but cant locate informatinos about this. Its possible create filters to spams receiving on server checking helo of sender server? For exemple, if spammer server use helo SALES1, I block automaticly e-mail, or if domain name of helo is localhost, with this probably I block big number of spammers, only servers with correct configuration on helo delivery message to my server.
Thank you
I search on this forum, but cant locate informatinos about this. Its possible create filters to spams receiving on server checking helo of sender server? For exemple, if spammer server use helo SALES1, I block automaticly e-mail, or if domain name of helo is localhost, with this probably I block big number of spammers, only servers with correct configuration on helo delivery message to my server.
Thank you