Here is an excerpt from what started this:
Results of a recent security audit have identified you as using POP or IMAP
to receive your AKO e-mail through a mail aggregator system such as Google
mail, Blackberry, or Team ON.

This action not only creates a security risk but also sets the conditions
for a possible compromise of your AKO username and password credentials.

Army regulations (AR 25-2 para 4-5a8) prohibit auto forwarding of official
mail to non official accounts and from providing your AKO credentials to
unauthorized individuals.

To prevent this risk, and mitigate the potential for a possible compromise
of AKO user credentials, on June 24, 2009 AKO will be blocking access to
POP/IMAP from these types of sites.

You may still use webmail ( or IMAP via a client such
as Outlook, Outlook Express, or Thunderbird to retrieve your mail.