I manage a network for a law firm, and users will sometimes utilize Exchange to send very large files to people out on the Internet. Due to the nature of the business, it is not practical to apply a size limit to attachments, but a new problem has now presented itself. Anytime the server is trying to send large messages out, it uses practically every bit of our 3MB dual T1 Internet bandwidth, leaving users with little or no Internet access at all during the time it takes to send these e-mails.
How can this issue be resolved? I would like to be able to "cap" the mail server's bandwidth to well below our 3MB capacity so users never experience drops in Internet connectivity when Exchange is working overtime in sending large attachments.