can not send emails but can receive

[allourgirles]

I am getting this email whenever I send one. I'm using Win 97 for tablet pc
and Office 2007. Thsi is the message I'm getting:

Your message did not reach some or all of the intended recipients.

Subject: RE: Variety Show 2008 - Suppertime
Sent: 11/27/2007 8:53 PM

The following recipient(s) cannot be reached:

'Christy Alben' on 11/27/2007 8:53 PM
550 relaying mail to gmail.com is not allowed

 

[Brian Tillman]

I am getting this email whenever I send one. I'm using Win 97 for
tablet pc and Office 2007. Thsi is the message I'm getting:

Your message did not reach some or all of the intended recipients.

Subject: RE: Variety Show 2008 - Suppertime
Sent: 11/27/2007 8:53 PM

The following recipient(s) cannot be reached:

'Christy Alben' on 11/27/2007 8:53 PM
550 relaying mail to gmail.com is not allowed

You must authenticate to your outgoing server with the credentials that
server expects.

 

[allourgirles]

How do I authenticate to your outgoing server with the credentials that
server expects??? It is happening for ALL emails I'm sending, no matter what
the server is (aol, sbcglobal, yahoo, gmail, etc. etc.) NO emails go out
with out getting a similar error message. HELP!!

 

[Brian Tillman]

How do I authenticate to your outgoing server with the credentials
that server expects???

Enter them on the Outgoing Server tab of your account properties, or select
the "Use same settings as my incoming mail server" option. In either case,
the "My outgoing server (SMTP) requires authentication" box should be
checked.