POP3 server access DisabledAllow access only from local networksAllow private and public (secure POP3S)Allow both POP3 and POP3S
IMAP server access DisabledAllow access only from local networksAllow private and public (secure IMAPS)Allow both IMAP and IMAPS
Webmail access DisabledAllow HTTPS (secure)Allow HTTPS (secure) from local networks