Emails being blocked

[manager15]

Since adding Cloudflare to my name servers, my emails are being blocked - see this message

" 550 5.7.26 This mail is unauthenticated, which poses a security risk to the sender and Gmail users, and has been blocked. The sender must authenticate with at least one of SPF or DKIM. For this message, DKIM checks did not pass and SPF check for [website] did not pass with ip: [209.85.220.41]. The sender should visit google for instructions on setting up authentication. p11-20020a170902e34b00b001ae5eaa0b9esor532725plc.18 - gsmtp"

[neiljay]

The solution is:

@manager15

The sender must authenticate with at least one of SPF or DKIM.

Your email provider should provide these values for you. Here’s the elaborated CommunityTip

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You can also get assistance at DMARCIAN for analyzing the values.