I cannot "reply" to messages without getting an error message.

[Barbara]

When I try to "reply" to a message, I get the following error:
"Your message did not reach some or all of the intended recipients.

Subject: RE: Vision
Sent: 12/22/2007 5:33 PM

The following recipient(s) cannot be reached:

'Rick Brown' on 12/22/2007 5:33 PM
550 Authentication required. Help at
http://www.earthlink.net/go/emailsettings"

I go to Earthlink and follow instructions for setting up the e-mail, but it
still does not work. I have a new computer, but it has been working fine
until the past 2 days. I can't seem to figure out what I need to do to
"reply" to messages without getting the error messge.

 

[Roady [MVP]]

In your account settings press More Settings... and on the Outgoing Server
tab set it to use authentication and try again.

 

[Barbara]

I have done that and just did it again, but I still cannot "reply" to
messages. Anybody have any other helpful info.?