I have my domain with Google Domains, which has been set up with the Netlify Name Servers and is displaying my website as intended. As I have a Google Workspace account, I have also set up my mail records which have been working fine (for the most part). During set up, I added a SPF authentication record, as suggested by Google.
The issue I’m encountering is that when I send an email from my custom domain to a Gmail hosted address, my message is blocked with the following error:
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 [[jnstn.io](http://jnstn.io/)] did not pass with ip: [188.8.131.52]. The sender should visit https://support.google.com/mail/answer/81126#authentication for instructions on setting up authentication. k5-20020adfb345000000b003110d6bc9e1sor304228wrd.10 - gsmtp
I’ve gone through Google’s documentation and the Netlify Forums to try to resolve the issue, but the recommended solution seems to be to add the SPF authentication record (which has already been added).
Any help would be most welcome.
Domain / Netlify Site Name: jnstn.io
Netlify Site ID: b88a567f-5398-448d-aed3-7a1c4b62d7e5