Impossible d'envoyer des mails à mes contacts depuis webmail

E-mails
1

Bonjour,
Depuis 2 jours j'essaie d'envoyer des emails depuis le webmail et je reçois ce message d'erreur ci dessous, pouvez vous m'aider ? Merci. Julie

_______ mail d'erreur ______
This is the mail system at host mo528.mail-out.ovh.net.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

2

Bonjour,

il faudrait le message d'erreur au complet pour aider.

Cordialement, janus57

3 
Le voici : <br /><br />&#34; Mail Delivery System out.ovh.net&gt;<br />Aujourd’hui, 21:50<br />christine.sevenlin@crepin-petit.eu<br />Pour renvoyer ce message, cliquez ici.<br />This is the mail system at host mo528.mail-out.ovh.net.<br /><br />I&#39;m sorry to have to inform you that your message could not<br />be delivered to one or more recipients. It&#39;s attached below.<br /><br />For further assistance, please send mail to postmaster.<br /><br />If you do so, please include this problem report. You can<br />delete your own text from the attached returned message.<br /><br />                   The mail system<br /><br />: host mx1.ovh.net[188.165.47.122] said:<br />    550 5.1.1 : Recipient address rejected:<br />    User unknown (in reply to RCPT TO command)&#34;<br /><br /><br />Merci,
4

User unknown


Tout est là. Cette adresse n'existe pas.

Faute d’orthographe dans le nom, probablement ?