McAfee antivirus is among the top three troublemakers for Windows Mail.
Sometimes it takes a while before symptoms start showing up.
First of all, turn off email scanning in McAfee, although that is seldom sufficient.
Next, delete that email account (because it has been corrupted by McAfee),
restart Windows Mail, then recreate the account.
If the problem continues, the only way you can prove or disprove that
McAfee is the culprit is to uninstall it, followed by using their debris removal tool:
http://service.mcafee.com/FAQDocument.aspx?id=TS100507
If you decide to replace McAfee, we can recommend a free antivirus
program which is more compatible with Windows Mail:
Instead of switching to a different antivirus, another option is to upgrade
to Windows Live Mail (WLM), which is more resistant to the adverse effects
of overly intrusive antivirus products:
http://download.live.com/wlmail
Even with WLM, you must disable email scanning in the antivirus,
for the reason explained here:
http://thundercloud.net/infoave/tuto...ning/index.htm
Gary VanderMolen, Microsoft MVP (Mail)
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"Wendell Perry" wrote in message news:...
Hello:
I having problems as of last night that I can't send an email. I called my
service provider and spend 3 hours over 3 telephone calls only to be told
there is nothing wrong with their server or my settings and my problems must
be with Microsoft . Hers is my error message. If anyone can help I would
appreciate. I did a complete scan and no virus plus I tried sending with
McAfee AntiVirus turned off.
An unknown error has occurred. Subject 'test', Account:
'pop.bellaliant.net', Server: 'smtp.bellaliant.net', Protocol: SMTP, Server
Response: '550 Message rejected', Port: 25, Secure(SSL): No, Server Error:
550, Error Number: 0x800CCC69
Thanks
"Rogerfree" <> wrote in message
news:26B0D154-3B3D-4FD5-A669-...
> Operating windows mail.
>
> Upto 6 sept operating receive and send OK.
>
> Since 6 sept receive OK but can't send. Gte error message as follows:
>
> Account: mail.btinternet.com, Protocol SMPT, Server Response'421 service not
> available; ceasing transmission' Port 25, Secure (SSL); No, server error 421,
> Eror number 0x800CC0F
>
> I have tried setting a restore point to mid august incase resent updates
> have caused the problem but no help.
>
> I am contacting you on a different computer where I use outlook.