"Bernie" <Bernie@xxxxxx> wrote in message
> Hi I have been able to use email fine for 2 months with vista and windows
> mail but it has recently stopped me from sending mail - i keep getting the
> following error message:-
> An unknown error has occurred. Subject '', Account: 'pop.ntlworld.com',
> Server: 'SMTP.ntlworld.com', Protocol: SMTP, Server Response: '550 you are
> not allowed to send mail to <trevorhall4@xxxxxx>', Port: 25,
> Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC69
> Any ideas guys?
Is it only email to that address that has this problem? Try sending a short
message to yourself if you need to check.
Does you connection to that server cross over from one internet provider's
equipment to another's before it reaches the server? If so, such
to port 25 are often blocked to cause problems for spammers, and you
need to ask ntlworld.com if you can use some other port instead, and if so,
where to find their instructions for doing this. Just trying all the ports
very slow way to find out, since there are about 65,000 ports available and
it's unlikely that more than a few of them will accept outgoing mail.
Also, unknown errors in Windows Mail are often due to interference from
an antivirus program. What if any antivirus programs do you have?
You might want to click on the Outbox and move any messages you find
to that address over to your Drafts folder, and see if this helps you send
messages to other addresses.