Using Sunbelt Kerio 4.3.246.0.
I have a problem in that my port 25 was hijacked. My ISP, Comcast, blocked port 25 and will not unblock it until I put in a preventive measure.
On May 26th I downloaded, installed and registered the above mentioned firewall mainly because it says on the webpage:. "Mail hijacking - Taking over your contact list and using your computer to send out spam". I read all the handbooks on the website and cannot find out how to make sure my config is correct for this blocking. I emailed support but didn't get an answer. So I turn to you.
What are the correct config settings to prevent my port 25 from being hijacked?
Thank you kindly ..