"Unexpected" termination is usually caused by interference from an
antivirus program. Which antivirus are you running?
As a minimum, email scanning in the antivirus should be turned off,
although that may not be sufficient to eliminate all bad effects.
In a worst case scenario, your antivirus may need to be uninstalled.
Email scanning in any antivirus should be disabled, for reasons
explained here:
http://thundercloud.net/infoave/tuto...ning/index.htm
If no improvement after disabling email scanning, consider upgrading
to Windows Live Mail, because it is less prone to suffering bad effects
from overly intrusive antivirus programs:
http://download.live.com/wlmail
--
Gary VanderMolen, MS-MVP (Mail)
"Sarah" <(E-Mail Removed)> wrote in message news:1681AB6C-4BB8-44B7-BCC6-(E-Mail Removed)...
> Hi, I hope someone may be able to help.
> I have been setting up mobile broadband (02) and anti virus software
> (Mcafee) today on my laptop which is fine except for my email.
> I can receive emails with no problem but I am unable to send emails. This is
> the error message that I get:
>
> An unknown error has occurred. Subject 'test', Account: 'pop.ntlworld.com',
> Server: 'smtp.ntlworld.com', Protocol: SMTP, Server Response: '421
> aamtaout03-winn.ispmail.ntl.com connection refused from [82.132.136.199]',
> Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67
>
> I don't know whether it is something to do with the virus
> protection/firewall, something to do with the email settings (which I have
> checked) or maybe something to do with the mobile broadband or something
> else. I have tried sending email with temporarily switching off the email
> virus checker, etc but this didn't work either.
> I hope someone can help if possible. Hope I've given enough info.
> Thanks,
> Sarah