Gmail is blocking emails it thinks is spam

[chris228]

I believe an SPF record needs to be added to cloudflare DNS server. How is this done?

[DarkDeviL]

You need to ask the email provider you use for your outbound messages, what kind of addition (most often a include:) that they will suggest you to have in your SPF record.

Google will for example request you to have “include:_spf.google.com” in your SPF record, so if it is Google you use, to send your outbound messages, you would add a TXT record, with information like this:

Type: TXT
Name: @
Content: v=spf1 include:_spf.google.com –all
TTL: Preferably set it to something like 12-24 hours, as mail related records likely do not change that often.

→ https://dash.cloudflare.com/?to=/:account/:zone/dns/records

Note: The actual include: (or whatever) to use in the Content block, instead of e.g. “include:_spf.google.com”, should, as mentioned in the beginning, be substituted with the information you receive from the email provider you use for your outbound messages.