Eviter d'etre marqué comme spam par google

Ci joint le message :

This is the mail system at host xxxxx

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.

                   The mail system

<mail@qmail.com> (expanded from  mail@domain.com): host
    gmail-smtp-in.l.google.com[2a00:1450:400c:c07::1a] said: 550-5.7.1
    [2001:41d0:1004:21bc::      12] Our system has detected that this 550-5.7.1
    message is likely unsolicited mail. To reduce the amount of spam sent
    550-5.7.1 to Gmail, this message has been blocked. Please visit 550-5.7.1
    https://support.google.com/mail/?p=UnsolicitedMessageError 550 5.7.1  for
    more information. l130si4589472wmf.42 - gsmtp (in reply to end of DATA
    command)

Final-Recipient: rfc822; mail@gmail.com
Original-Recipient: rfc822;mail@domain.com
Action: failed
Status: 5.7.1
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.1 [2001:41d0:1004:21bc::      12] Our system has
    detected that this 550-5.7.1 message is likely unsolicited mail. To reduce
    the amount of spam sent 550-5.7.1 to Gmail, this message has been blocked.
    Please visit 550-5.7.1
    https://support.google.com/mail/?p=UnsolicitedMessageError 550 5.7.1  for
    more information. l130si4589472wmf.42 - gsmtp

Extrait :

Il vous faut simplement éditer vos zones DNS chez votre registrar, pour y ajouter une entrée de type TXT. L'instruction pour la cas décrit précédemment est :

v=spf1 a mx ip4:<IP> -all

Paramètres :

• spf1 : la version de SPF
• a : s'applique au A-record courant
• mx : s'applique à l'entre MX courante
• ip4<IP> : n'accepte que l'IP spécifiée (IP du serveur)
• -all : refuse tous les autres

Ci joint la solution  : http://wiki.hoa.ro/doku.php?id=admin-systeme:mail-server-marked-as-spam-google