/lib/firewalld/services/ Current File: //lib/firewalld/services/pop3s.xml

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>POP-3 over SSL</short>
  <description>The Post Office Protocol version 3 (POP3) is a protocol to retrieve email from a remote server over a TCP/IP connection. Enable this option, if you plan to provide a POP3 service (e.g. with dovecot).</description>
  <port protocol="tcp" port="995"/>
</service>