to look at the maillog after making that change.
I've commented out the line I added to /etc/mail/sendmail.mc.
>You should NOT modify the files manually.
>You can configure the smarthost in the UI under E-mail->Advanced settings.
> > I have a PC on my local network at home running BlueQuartz CentOS.
> >  I use it as a testing server for web development.
> > able to send mail.
> > need to give access to someone outside.
> > I'm pretty new at this, so I'm not sure where to go from here.