Stan: Check with your ISP. Not all ISPs will allow you to use a DIFFERENT SMTP server from their own, especially without logging into theirs first. This is likely NOT an Outlook "problem" issue, but your account setup. So, if you have, for instance, comcast.net, try using THAT as the outgoing on the account and see if it works. If it does, then try setting up your other SMTP, but use the More Settings button, Outgoing Server tab to log onto your comcast... Clear as mud?