Not sure why you are posting in this restricted area but what product are you using?
If you are trying to mail from within McAfee software then often that protocol is blocked by ISP's generally so the best method is as per this:
Disputes regarding the web page you linked can be started here: Check Single URL which is a link directly on that page.
Please advise what product you are using as this should be posted in VSE I think and as this is a restricted area I cannot move it anywhere.
OK I had a manager move this for you. It's now in VirusScan Enterprise which is, I assume, what you are using. Someone should answer you soon.