I can receive e-mails via Outlook, but don't know what I
did to disrupt the ability to send e-mails via Outlook.
Tech troubleshooting with my ISP didn't help. Any
suggestions? Here's the error message I receive:

Task 'mail.verizon.net - Sending and Receiving' reported
error (0x800CCC78): 'Unable to send the message. Please
verify the e-mail address in your account properties. The
server responded: 553 Authentication is required to send
mail as <(E-Mail Removed)>'

Set your Outgoing server properties to authenticate using the incoming
server settings.

--�
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. Due to
the (insert latest virus name here) virus, all mail sent to my personal
account will be deleted without reading.

After searching google.groups.com and finding no answer,
(E-Mail Removed) asked:

| I can receive e-mails via Outlook, but don't know what I
| did to disrupt the ability to send e-mails via Outlook.
| Tech troubleshooting with my ISP didn't help. Any
| suggestions? Here's the error message I receive:
|
| Task 'mail.verizon.net - Sending and Receiving' reported
| error (0x800CCC78): 'Unable to send the message. Please
| verify the e-mail address in your account properties. The
| server responded: 553 Authentication is required to send
| mail as <(E-Mail Removed)>'

>-----Original Message-----
>I can receive e-mails via Outlook, but don't know what I
>did to disrupt the ability to send e-mails via Outlook.
>Tech troubleshooting with my ISP didn't help. Any
>suggestions? Here's the error message I receive:
>
>Task 'mail.verizon.net - Sending and Receiving' reported
>error (0x800CCC78): 'Unable to send the message. Please
>verify the e-mail address in your account properties.
The
>server responded: 553 Authentication is required to send
>mail as <(E-Mail Removed)>'
>.
>------- reply------------
I had the same problem with Earthlink in March. The
problem was Earthlink went to a new system (for security)
requiring an authorization code for Sending Emails.
Thech Support was albe to have me change a couple of
settings in my profile that fixed the problem right away.

Since all the ISPs were having the same security problem,
I wonder if Verizon did the same thing and your Tech
support guy may not have mentioned it.
Hope this helps point in the right direction.
Walt