Hi We have several thousand users in our entire company (one Exchange org). A user wants to send out an email to the entire company. I'm worried that this may clog up the Exchange system and cause delays to other emails. We are running a mix of Exchange 2003 and Exchange 2007. I was wondering - - Is there any way that we can classify the mass mails as low priority so that othe emails are delivered first if queues start building on the bridgeheads/hub transports? - If queues do start building, what's the best way to clear them (or just wait)? - Are there any special mechanisms Exchange has for this sort of scenario? And what difference would this make if the several thousand were external users?

Hi, Yes there are Many ways to use Exchange to send mass mail without any problems. And there are many tools and addins within and outside of the exchange server.. "Microsoft Exchange Server is a collaborative communication system used in organizations and businesses . Using the server, you can take advantage of various features in Microsoft Outlook, including sharing calendars and contact lists. You also can create distribution lists, which are collections of contacts that you email as a group. For example, if you often send bulk emails to the sales team, you can create a distribution list with the email addresses of everyone in the group. Then, when you send a message, everyone in the group receives it. You can check out this link and it may give you some more idea about How to Send Bulk Emails With Microsoft Exchange Server | eHow.com or there are a load of programs and addins for 2003 and 2007 that should send bulk emails without any hastle http://microsoft1.software.informer.com/download-microsoft-exchange-how-to-send-mass-mail/ myself, not needing to send too much emails for newsletters ect. i would not have any other real information on the matter

Internal and external email is very different. For internal email, the hit will be negligible. If you have four servers, for example, then only four copies of the messages will be sent between the servers. Exchange is intelligent enough to know it is internal. The only hit you will get is when Outlook downloads the messages, but if the org is of considerable size, then this will just be one of many, and shouldn't be much of a hit. For external email, that would be very different. Exchange is a very poor bulk emailer. It would be better if you outsourced it. That would allow someone else to manage the bounces, unsubscribe requests and give you some reporting, all of which Exchange cannot do. Simon.Simon Butler, Exchange MVP. http://blog.sembee.co.uk , http://exbpa.com/