help!!

[=?gb2312?B?eWluZW5sYWk=?=]

Hi,
 
now i do mail client development,i want to add kerberos authentication,i want to know how to connect mail server which support kerberos authentication, which mail servers support kerberos authentication, or how can i set up mail server environment.
 
besides, i work on windows 2K.i user pop3 and imap protocals.
 
i hope i can get your kind help,thanks in advance:)
 
charming yin.