Does anyone know how to stop recalling an e-mail using Outlook?

[Rain Man]

I sent an e-mail to a client and then realized that I'd forgotten to add something. I tried that interesting function in Outlook to "recall" the message, and then sent a corrected message.

Well, something's a bit weirded out with the "Recall" and every hour or so I get an e-mail from Bill Gates or somebody saying that the Recall has failed. Does anyone know how to shut this down?

Thanks. If you solve this and we ever run into each other in Zimbabwe, the first drink is on me.