Don't get me wrong, but this sounds like a huge spam mailer! Why would any company need to mail 12 million emails per day? They can't possibly be personalized with specific information for individuals. That sounds like a huge undertaking...just curious what it's use is? On Wednesday 09 January 2002 10:21 am, you wrote: <snip> > (a total of about 1 million messages per 8 hour work > day). By the end of the year, their estimates are to be sending 12 times > that. As this is outgoing mail only, local delivery really isnt a big > deal, we have one incoming server set up for that, and is handling just > fine. <snip>