[IMail Forum] Load testing

[Jeff Andreou]

Our current setup has iMail running primarily as a POP3 server, relaying 
mail only for local hosts with a separate SMTP server running exim for the 
majority of our clients.  We'd like to switch to iMail either as one 
machine running both POP and SMTP or with our current setup of a separate 
machine for SMTP and POP but want to do some load testing first.  Does 
anyone know of a good utility or set of utilities for testing SMTP and POP3 
loads?  The preference would be for a freeware/open source testing utility...
-Jeff