i found it was the relay settings which are difficult to setup to avoid spam
sender server.
"claire herault" <fg@@herault.com> a écrit dans le message de
news:bmb3ia$nkl$1@news-reader1.wanadoo.fr...
> Config: IIS 6.0 windows server 2003
>
> Hello !
>
> My smtp is unable to deliver correct mails to recipients.
> In every bad mails i can see the 0xC00402C7 error.
> When a mail is sent to my smtp server. the smtp server accept the mail but
> it don't transfer to the pop service.
> MX records should be ok. There is no authentification. I sent several kind
> of MIME format email. I changed relay configuration.
>
> I would be thanksful if you can help me.
>
><!-- ~MESSAGE_AFTER~ -->
>> Stay informed about: 0xC00402C7 problem, SMTP => POP3