I deleted 2 users. Then sent a test email to make sure that any message sent to them bounced back as an error. all good.
However now the message seems to be stuck in the system and keeps being sent each time I open outlook.
Any ideas?
I doubt that this is an SME problem, is the email "stuck" in the Outbox in Outlook? If so, delete it from there, sometimes you have to catch it to delete it before it starts trying to send it again, you have to Close Outlook down, then start it up and delete it quickly. (can you believe it?).