I am having some trouble with my OWA users. They are getting encrypted e-mails from one of our vendors but are unable to open them because of an issue documented here: https://voltage-ps-0000.talx.com/resources/zdm/troubleshooting.html#owa What the heck is Zero Download Messenger Proxy and how can I enable it on my Exchange 2000 ent. server system? Full Outlook clients have no problems accessing this info...it's just my OWA users. Thanks Tony