McAfee VirusScan has detected that you are using an unsupported SMTP
extension from your email client. McAfee VirusScan might not be able to
detect virusesin your outgoing email messages. To ensure that your email
messages are scanned, you must turn off the SMTP extension in your email
client. If timeouts occur while you are sending email messages, please
disable outbound email scanning.
I never got this before, we just had our CPU fixed this weekend~~ it needed a new power supply part (sorry, don't know what it is called exactly) anyway, they fixed it and we didn't lose any data and it works fine but now I keep getting this window popping up when I try to send an email.