The best way to solve a problem is to get the answer from someone who’s already gone through the pain of figuring it out. That’s why Windows IT Pro is launching Exchange Tips & Tricks Update, a new free email newsletter that subscribers receive twice a month. You’ll receive tips from experts in the community, and we’ll highlight the best tips posted to our Exchange forums. You’ll also find a Community Events feature that keeps you up to date on user group activities and other events. 

To get your favorite tip included in Exchange Server Tips & Tricks UPDATE, you'll need to post it here in this thread. Our editors review all postings and will choose the most helpful ideas to include in the newsletter. Further, we'll also choose two "Best Tips of the Month" to feature, and the poster will receive a $50 gift card. You'll be helping your colleagues in the Exchange community just by posting, and you might be rewarded as well. 

To get your usergroup announcement in the newsletter, email a short blurb about the event to bwinstead@windowsitpro.com with the subject "Exchange Community Events." We're only interested in announcing free or low-cost events, and we'll include a link to your local Web site (or other contact information you provide) so users can get more information. 

Well, let me start here…

Frequently Exchange Administrators give Send-As permission on mailbox while working on some issues and forgot to remove it after troubleshooting.

But that can be grabbed by auditor or reviewer during some audits so it would be good to confirm that no one has Send-As permission which is not supposed to be.

So here is the way to get the report on Send-As permission.

http://exchangeshare.wordpress.com/2008/09/01/how-to-find-all-mailboxes-with-send-as-permission-assigned/

Editors have permission from my side to use this article.