clgypsy said:
Can't send email. What does this error message mean? And how
do I fix it?
It means you are trying to use an SMTP server that is *not* on the
domain to which you are connected. Your ISP will not permit SMTP
traffic to go off their domain (so you must use their SMTP server) or
the targeted SMTP server requires you prove that you have permission to
use their mail server (which you never did despite authenticating to the
domain you used for the Internet connection), or the target SMTP server
will simply not accept any connections from users that are not on their
domain.
Check with your ISP to see if they permit you to send SMTP traffic
across and off their domain to some SMTP server that is *not* on their
domain. Check with the owner of the SMTP server that you are trying to
use to see if they permit connections to their SMTP server that
originate from off their domain. If they do, you will probably have to
authenticate to that off-domain SMTP server.
