Hello,I get the following error when ever I enter an address in the From: field."You do not have permission to send to this recipient. For assistance, contact your system administrator."I get this error even when sending "From" the account I am using to send the message, it works fine if I leave the from field blank.The only user In the Company able to Send As, is the Exchange Admin account.I'm figuring this is a permissions issue, but checking effective permission againts the various accounts or Groups shows that the "Send As" permissions are set correctly.For example I have a Distribution groups called Support, which forwards to our support group, then need to be able to "Send As" support@company.tld, but when they try they get the bounce message.I'm Running Windows SBS 2003 Standard, with Exchange 2003 SP2Anyone have any ideas as to the cause, or solution?

My guess would be that there is an inherited deny somewhere for another group for which you are a memeber (domain admins, enterprise admins, etc)

I'm having the same problem, but only with new users. My initial setup was done on SBS with no service packsbut I have now applied service packs and since then I have been unable to setup new users with "Send As" permission. All the orriginal users are still working fine. New users, whilst retaining the setting in the security tab, receive an immediateNDR from the server stateing "You do not have permission to send to this recipient. For assistance, contact your system administrator. MSEXCH:MSExchangeIS:/DC=local/DC=DGInternet:BUFFALO2003" I'm stumped at the moment, but looking hard.. anyone else got any clues? I've found this reference from MS http://support.microsoft.com/kb/895949 Which says the behaviour has changed relating to Full Mailbox Access and Send As permissions but this only seems to confuse my google searches as I often find results attaining to the correct process prior to the change in behaviour. I still have the mailbox access enabled because I want users to be able to see other peoples mailboxes, but I also have the Send As permission allowed because I want the users to be able to send as other people on the system.. basically it's all very open, but it doesn't seem to work.