Is the machine fully up-to-date at Windows Update?
--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE/OE, Shell/User, Security), Aumha.org VSOP, DTS-L.org

Need Help wrote:
Thank you for your reply. I tried that, but it didn't help.

By accident I happened to be looking through my address book and happened
to notice that the email addresses in the emails I was trying to send
were also in my address book. Upon eliminating the addresses in my
address book, all emails in question were sent out without any problems.

I don't know what the address book had to do with anything, but now that
those email addresses aren't in the address book, I can send out emails
okay. Thanks again for your help.

"PA Bear" wrote:

Disable email scanning by your anti-virus application. It provides no
additional protection and even Symantec says it's not necessary:

paste
Disabling Email Scanning does not leave you unprotected against viruses
that are distributed as email attachments. Norton AntiVirus
Auto-Protect scans incoming files as they are saved to your hard drive,
including email and email attachments. Email Scanning is just another
layer on top of this. To make sure that Auto-Protect is providing the
maximum protection, keep Auto-Protect enabled and run LiveUpdate
regularly to ensure that you have the most recent virus definitions.
/paste
http://service1.symantec.com/SUPPORT...02111812533106

Troubleshooting error messages that you receive when you are using OL
and OE http://support.microsoft.com/?kbid=813514

--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE/OE, Shell/User, Security), Aumha.org VSOP, DTS-L.org

Need Help wrote:
Since I installed the latest security updates from Microsoft
pertaining to Outlook Express, I can't send out emails.

Using XP w/SP2.

- Did a telnet check and it was okay.
- Sent out emails from another computer (ME) using same email
accounts and that was okay.

The error message I get is:

An unknown error has occurred. Subject 'test', Account: 'ws4u
Support', Server: 'mail.emailbox10.com', Protocol: SMTP, Port: 25,
Secure(SSL): No, Error Number: 0x800CCC0B

Any help is appreciated.

Thank you,
Craig