I dont think so @raf. I can specify my IP's hostname to t-online.de too.
On Fri, Dec 10, 2021 at 12:34 PM raf wrote:
> On Tue, Dec 07, 2021 at 07:55:54PM +0800, Piper H
> wrote:
>
> > I sent an email from my t-online.de account to gmail.
> > Gmail shows
I sent an email from my t-online.de account to gmail.
Gmail shows SPF pass by best guessing:
Received-SPF: pass (google.com: best guess record for domain of
x...@t-online.de designates 194.25.134.18 as permitted sender)
client-ip=194.25.134.18;
And t-online.de has no SPF setup for which you can c
