pop3d security

[Rick Glunt]

In the qmail FAQ it metions "Security note: pop3d should only b 
used in a secure network...".  Doe sthis mean it is not fit for a 
server on the Internet?  I see it recommended in several places but 
never see anthing else abou tit being insecure.
Rick Glunt
IT Manager
Lumax Industries, Inc.