And then remove the "`a mx include:_spf.google.com`" part from your SPF. `a`: Cloudflare HTTP Rever

And then remove the "
a mx include:_spf.google.com
" part from your SPF.

a
: Cloudflare HTTP Reverse Proxies will never send on your domain's behalf.

mx
: Is pointing to Cloudflare's INBOUND mail servers, they do NOT send OUTBOUND and should not be listed in your SPF.

include:_spf.google.com
: The "trick" will always authenticate as the
@gmail.com
, and expose the real Gmail address. Since the SPF is done on
gmail.com
, you're overauthorizing by having
include:_spf.google.com
, which - depending on the eyes looking at it, is a security issue / risk.
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