Disable Firewall Setting for AtMail

1. Turn off Firewall






















2. Turn off Selinux






















3. add the port 25 (2-way) and port 110 in Hardware Firewall

4. check the smtp and pop3 port is open, and firewall is no any rule in the Fedora.

# netstat -tulpn | grep :25
# netstat -tulpn | grep :110
# iptables -L -n