Due to the increase in e-mail borne viruses and recent virus attacks that turn computers into spam factories, e-mail messages originating from mail servers with Dynamic IP Addresses will be rejected by the e-mail system.

A high percentage of home computers with broadband access connect to the Internet via Dynamic IP Address.  This policy is a security measure to protect users and help to curb spam and virus attacks.

As reported by News.com, "High-profile viruses such as Sobig, MyDoom and Bagle have preyed on available bandwidth, lax security and ignorance among ISPs and consumers alike to turn unknowing Net users into bulk e-mailers."