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)