To give you a bit more information, I ran XMail in debug verbose mode, and the error log is:
Filter error (-121): Sender = "SenderAddress" Recipient = "RecipientAddress" Filter = "d:filter.exe" - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
