Why is it that unencrypted POP3 or IMAP services are missing from firewalld services missing in RHEL7?

Solution Unverified - Updated -

Issue

  • When running firewall-cmd --get-services command, it shows following output :
RH-Satellite-6 amanda-client bacula bacula-client dhcp dhcpv6 dhcpv6-client dns ftp high-availability http https imaps ipp ipp-client ipsec kerberos kpasswd ldap ldaps libvirt libvirt-tls mdns mountd ms-wbt mysql nfs ntp openvpn pmcd pmproxy pmwebapi pmwebapis pop3s postgresql proxy-dhcp radius rpc-bind samba samba-client smtp ssh telnet tftp tftp-client transmission-client vnc-server wbem-https
  • Why the unencrypted POP3 or IMAP services are missing from that list?

Environment

  • Red Hat Enterprise Linux 7
  • firewalld

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