After upgrading Netscape 6.2 to 7.0, I can no longer get my external SMTP
outgoing mail to work.

When I try to send an email, I get the message "An error occurred while
sending mail. The mail server responded: 5.0.0 Access denied. Please verify
that your email address is correct in your mail preferences and try again."

It worked fine for years, but no matter what I tweak in the Netscape mail
preferences, it won't send out. Incoming mail works fine.