Hi Bill, When you use the From field to change the sender ID, you have to use an alternate "mailbox name" to which you have delegated permissions. You cannot use your own proxy address as a delegate address. Proxy addresses are just email addresses, and they are not treated as a mailbox with permissions to send on behalf of the person. You normally use the From filed to send on behalf of another person in your organization, not as your proxy address. The only way you can do this in Outlook/Exchange environment would be to change your Primary SMTP address, but I don't think that is what you need. Regards, Raj -----Original Message----- From: William Holmes [mailto:wtholmes@xxxxxxxxxxxxxx] Sent: Wednesday, September 22, 2004 3:00 PM To: [ExchangeList] Subject: [exchangelist] Send As Causes an error http://www.MSExchange.org/ Hello, I have an exchange organization that is responsible for two email domains: cs.cornell.edu cis.cornell.edu I have users setup up that have proxy addresses for both of these domains including myself. My primary SMTP address is wtholmes@xxxxxxxxxxxxxx If I attempt to send mail to my cis address, from either an internal or external mail server,william.holmes@xxxxxxxxxxxxxxx everything works fine. I receive the mail without a problem. However sometimes it would be desirable to send as william.holmes@xxxxxxxxxxxxxxx however when I do so I receive the following error message: The following recipient(s) could not be reached: wth1@xxxxxxxxxxx on 9/22/2004 2:46 PM You do not have permission to send to this recipient. For assistance, contact your system administrator. MSEXCH:MSExchangeIS:/DC=edu/DC=cornell/DC=cs:EXCHVS1 I can send to this recipient if I do not alter the From Field. What is causing this error and how can I correct it? I don't understand why this is a "send to" error rather than a you don't have permission to "send as" error. Any info appreicated. Thanks Bill William Holmes (MCP) Department of Computer Science 310 Upson Hall Cornell University Ithaca, NY 14853 wtholmes@xxxxxxxxxxxxxx 607 255-1757 (o) 607 227-6049 (c) ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: psraj@xxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to listadmin@xxxxxxxxxxxxxx