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Excellent advice - I never thought to use that authenticated users option. Nice!
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In AD, I want to keep the same distro group name but change the email address. Every time I go into the AD properties and change the email address (SMTP and X400), or even if I delete the wrong one and set the new correct one as primary, &nbsp;it keeps automatically putting the old one back as primary. <br />
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Why? How do I get around this? I would like to officially thank MS for this, as I renamed the damn thing 2 weeks ago when I noticed a spammer had our email distro for the whole company. And today a new spam had a link that caused infections... and naturally a bunch of people were infected. Thanks for AUTOMATICALLY CHANGING MY STUFF BACK... I didn't know what I was doing, did I MS??!!! GRRRR. Do I sound annoyed? 
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In AD, I want to keep the same distro group name but change the email address. Every time I go into the AD properties and change the email address (SMTP and X400), or even if I delete the wrong one and set the new correct one as primary,  it keeps automatically putting the old one back as primary. 

Why? How do I get around this? I would like to officially thank MS for this, as I renamed the damn thing 2 weeks ago when I noticed a spammer had our email distro for the whole company. And today a new spam had a link that caused infections... and naturally a bunch of people were infected. Thanks for AUTOMATICALLY CHANGING MY STUFF BACK... I didn't know what I was doing, did I MS??!!! GRRRR. Do I sound annoyed? 

How to change email address for a universal group

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

An email client, email reader or more formally mail user agent (MUA) is a computer program used to access and manage a user's email. A web application that provides message management, composition, and reception functions is sometimes also considered an email client, but more commonly referred to as webmail.