• Exchange 2003
• Exchange 2007

• Using advanced VPOP3 features with Exchange (eg monitoring, etc)
• Using VPOP3 Spam Filtering with Exchange
• How to 'share' domains between Exchange and VPOP3

Note that the VPOP3 settings are identical whichever version of Exchange you are using (5.5, 2000, 2003, 2007, 2010 or any later version), but the relevant settings in Exchange may move or be renamed between versions. If you are using a different version of Exchange from one listed above, then use the nearest version, but you may have to refer to the Microsoft documentation or Google to find the equivalent Exchange settings in your version.