There's a big ol' cluestick in that error: Message identified as SPAM -
Please visit http://www.charter.com/postmaster

Marc wrote:

> I can't send emails, i keep getting this error message?? Any help will be
> greatly appreciated. I still receive email, not send.
>
> An unknown error has occurred. Subject 'Re: Trundle bed frame - $75
> (Uptown)', Account: 'charter.net', Server: 'smtp.charter.net', Protocol:
> SMTP, Server Response: '550 5.2.0 SRZM1c0033wj0z405RZMGQ Message
> identified
> as SPAM - Please visit http://www.charter.com/postmaster E5110', Port: 25,
> Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC69