As the email admin for one of the top internet gifting companies in the world I can say Don's answer is spot on. A 3rd party is the way to go with this. Most of those 3rd parties already have agreements with ISP's regarding "email blasts" of this nature. I totally recommend this is the way to go. We also use cheetahmail which we find very professional and they do the jon well. We recently brought on another 3rd party who at first wanted all the NDR's to come back directly to us. I was on the call and advised management about the ramifications of this. Needless to say that did not happen and the 3rd party receives all the bounce backs.
Your corporate email servers should never be used for "mass email blasts". As Don stated this is a perfect way to get your entire company shut down as your ISP will ban you in an instant. Good luck :) ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
