[Mailman-Users] Hardware Requirements?

[Tricia C. Sesar]

I've been asked to size up a list server which would begin at 1000 users and 
need to scale to 32,000 users. The lists would be primarily to provide one 
way notification-type messages, rather than constant back and forth 
conversations between members.

I've never set up a list server, so I'm wondering what some general hardware 
requirements might be. 

The OS will be Linux, and theMTA would be either Sendmail or Qmail.

Thanks in advance for any suggestions.

--Steve