everybody I have a problem with a client (Outlook 2007) that tries to recall a message sent in error when he made this point a message reaching the mail server Exchange 2007 informing him that: "You're not allowed to send this message because you are trying to send a message on behalf of another sender without permission. Make sure you send the correct name of the sender or request assistance from your system administrator to obtain the required permission. " I did not understand when a reminder does not work, he says, saying that the recall failed, but that message is the first time I see it (unless you try to send from another box which he has no right). Thank you for your help

Havent seen that error message with a recall either, but the recall feature is pretty buggy - always has been and only works if you are lucky it seems, so I tend not to use it and recommend others not to rely on it: Oldie but Goodie: http://support.microsoft.com/kb/197094 How to use the recall message feature in Outlook

I think you did not understand what I mean, forget ....

No I did understand what you said. I stated I havent seen that error myself. I will also argue that using the recall feature is not reliable and therefore I am not surprised if a message such as that was generated.