SMTP does require login/password and those are in place and correct. I think I might have to check with Cirtex to see if they offer directions, but i've been using this same method for setting up my email account on mobile devices (Treo, 3 BB's and noe EVO) for quite some time. And I will have to check with Cablevision (Optimum) for the question about port 25. Good grief! Never thought setting up email to work correctly could be such a pain.
Oh, and in case it matters, both my incoming and outgoing servers are mail.rustypixel.com. Not using the mail.optonline.net for outgoing as that has never worked for me.
Thanks again... and again...