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gmail says "best guess record for domain
I am using php to send emails from my droplet and the emails always go to the gmail spam folder.
Specifically, I see the following:
Received-SPF: pass (google.com: best guess record for domain of email@example.com designates 18.104.22.168 as permitted sender) client-ip=22.214.171.124;
spf=pass (google.com: best guess record for domain of firstname.lastname@example.org designates 126.96.36.199 as permitted sender) email@example.com
Something needs to be done in order to avoid having the emails go to the spam folder.
The message “best guess record for domain” indicates that something needs to be done with the subdomain “droplet”?
Do I have to define something in the DNS?
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