Hi,
On Wed, Feb 26, 2025 at 07:56:02PM +0700, Ian Hobson via BitFolk Users wrote:
For those who haven't clicked, it's a tutorial for setting up mail
forwarding with Cloudflare.
The first demonstration email ends up in gmail's spam folder. Good to
see that even Cloudflare cannot reliably deliver to gmail!
It looks like Cloudflare are doing SRS on this because when he hovers
over the received email in gmail's web interface, a popup says
"mailed-by: aircursor.com" (his demo domain) even though his from
address was hungrypy(a)gmail.com. So I think that is checking SPF, which is
envelope sender, so implies the envelope sender was set to
aircursor.com.
The popup also says "signed-by: gmail.com". I think that will be gmail's
DKIM, which went through unmolested.
So even with passing SPF and DKIM this mail still went to spam folder.
As it's Cloudflare it does also require you to have your DNS with them.
Thanks,
Andy
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