550 You must SMTP Authenticate before sending

M

Minding

I posted this recently and no one has yet recognized the error message. If
you've received it and resolved the issue it represents, I hope you will
share:

It's occasional, particularly with replies; I click send and th following
message instantly appears in my InBox:
* 550 You must SMTP Authenticate before sending to <email address>

I'm using Microsoft Outlook 2002 SP3
My IPS is Roadrunner.
I have Norton Internet Security 2005 (NIS).

I've removed NIS; no change.
I've changed ISPs; no change.
In Outlook, I've experimented with the "Log on using Secure Password
Authentication" setting and the "My outgoing server (SMTP) requires
authentication" and the problem does not get resolved.

I'm about to uninstall/reinstall Outlook.

Thanks,
George--
 

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