This only affects the XP Pro machine-another with XP Home sends the same optonline.net account using the same settings fine, so I have to believe it's something in the group policy settings of XP Pro but have no idea what.
Anyone have any idea?
Ummmm....you're sending Cablevision/optonline.net email while connected to FiOS?
My guess is you need to change the settings in Outlook on the XP Pro machine so that the outoing port is 587 with authentication. Try that and see if it works.
To the OP
The previous poster is correct. You must enable "my server requires authentication" and you must change the port number to be 587. I just tested this and it indeed works using the above settings.
Jim
Thanks for the answers but that's how I set it up. As I said it works fine on the XP Home machine but not the XP Pro one. The only other factor is the XP Home box is hardwired, the XP Pro is wireless. Verizon cs accessed it remotely and agreed it was set up correctly but couldn't explain the failure. It receives but won't send, and throws this error:
Recipient rejected by the server.............
no matter which address I use.
I'm guessing it's something to do with the more complex security configuration XP Pro uses causing a conflict with Verizon's smtp server. We have had issues with this installation of Outlook, but I reinstalled it and it made no difference.
I'm hoping someone else has come across this and been able to solve it.
My tests were with xp Pro except I used Outlook express
Can you try using outlook express for testing? Make sure your username (email@optonline.net) is defined and your password is correct. Make sure the outgoing settings are set to use the same credentials as the incoming server.
Are you able to receive email? Don't use SSL, it will cause the error. You just want to use authentication.
In this case, I couldn't send outgoing email via my SMTP server on port 25 despite the ..... I uninstalled Outlook XP and installed Outlook 2000 on my own system.
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Domain Name Checker
Be aware that Verizon blocked Port 25 Outgoing on their Residential accounts to try and cut down on spam. You'll need to use alternate ports to send mail via SMTP.
