On 2021-12-07 13:28, Togan Muftuoglu wrote:
"Piper" == Piper H <pott...@gmail.com> writes:
Piper> I sent an email from my t-online.de account to gmail.
Piper> Gmail shows SPF pass by best guessing:
Piper> Received-SPF: pass (google.com: best guess record for domain of
Piper> x...@t-online.de designates 194.25.134.18 as permitted sender)
Piper> client-ip=194.25.134.18;
Piper> And t-online.de has no SPF setup for which you can check from
their
Piper> domain. So what's the best guess record by google?
https://support.google.com/a/answer/10685928?hl=en
"In short Possible causes include:
SPF hasn’t been set up for your domain.
SPF isn’t set up correctly for your domain.
There’s an issue with the DNS at your domain provider."
https://dmarcian.com/spf-survey/?domain=t-online.de
https://dmarcian.com/dmarc-inspector/?domain=t-online.de
https://multirbl.valli.org/lookup/194.25.134.18.html
why accept mail from t-online.de ?