Our Email Forwarding Policy applies to all shared services. Email forwarding is directing incoming messages from one email address to another email address. When an email message is sent to your forwarded email address, our mail servers redirect the message to the email address you specify. The followings is the list of domains with stringent spam policy that we prohibit email forwarding to that might lead to blacklist of server IP address and affect email delivery for others.
Users mailboxes have been configured with email forwarding to the above destination will NOT be forwarded
Some email service providers like gmail and hotmail allows users to add POP3 account. Instead of forwarding, use fetching. To learn more, refers to their FAQ for details: https://support.google.com/mail/answer/21289?hl=en and http://windows.microsoft.com/en-sg/outlook/pop-email .