Blocage GMAIL " 550-5.7.26 This mail is unauthenticated, which poses a security risk to

E-mails
1

Bonjour,

Comment résoudre svp :

This is the mail system at host mo539.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.

The mail system

: host gmail-smtp-in.l.google.com[108.177.15.27] said:
550-5.7.26 This mail is unauthenticated, which poses a security risk to the
550-5.7.26 sender and Gmail users, and has been blocked. The sender must
550-5.7.26 authenticate with at least one of SPF or DKIM. For this message,
550-5.7.26 DKIM checks did not pass and SPF check for [befteic.com] did not
550-5.7.26 pass with ip: [51.210.91.46]. The sender should visit 550-5.7.26
https://support.google.com/mail/answer/81126#authentication for 550 5.7.26
instructions on setting up authentication.
d4-20020a05600c3ac400b003fa77d75284si5707976wms.210 - gsmtp (in reply to
end of DATA command)

Merci beaucoup !

2

befteic.com


Votre domaine date de 2020, et à cette date OVH mettait toujours un enregistrement SPF dans la zone DNS. Il semble que vous l'ayez effacé.
3

Bonjour @YassineT2,

Si le retour apporté par @Fritz2cat répond à votre demande, je vous invite à marquer ce dernier comme solution.

Dans le cas contraire, n’hésitez pas à ajouter des informations afin qu’une nouvelle réponse vous soit apportée par la communauté.

^FabL