Mail delivery failed: returning message to sender

[nico97410]

Bonjour a tous.
A chaque fois qu'un client passe une commance sur mon site, il ne recoit pas sa facture et je recois un mail avec ce titre:
 

Mail delivery failed: returning message to sender

 

 

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

...@hotmail.fr
    SMTP error from remote mail server after MAIL FROM:<[email protected]> SIZE=151289:
    host mx1.hotmail.com [104.44.194.232]: 550 SC-001 (SNT004-MC6F12) Unfortunately, messages from 212.227.22.73 weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors.

------ This is a copy of the message, including all the headers. ------
------ The body of the message is 146692 characters long; only the first
------ 106496 or so are included here.

 

Une personne pour m'aider please.

Merci a vous

[Mediacom87]

Bonjour,

 

C'est simple, votre ip serveur est blacklisté pour cause de spam. Vous devez etre en hébergement mutualisé.