Re: what's best guess record for SPF

2021-12-10 Thread raf
On Fri, Dec 10, 2021 at 12:58:06PM +0800, Piper H wrote: > I dont think so @raf. I can specify my IP's hostname to t-online.de too. Which might be one of the reasons that people shouldn't be doing this sort of guessing in the absence of an SPF record. cheers, raf

Re: what's best guess record for SPF

2021-12-09 Thread Jaroslaw Rafa
Dnia 10.12.2021 o godz. 12:58:06 Piper H pisze: > I dont think so @raf. I can specify my IP's hostname to t-online.de too. Yes, you can set PTR of your IP to somename.t-online.de, but somename.t-online.de won't resolve back to your IP. And this is the method of checking that MTAs (eg. Postfix)

Re: what's best guess record for SPF

2021-12-09 Thread Scott Kitterman
On December 10, 2021 4:32:50 AM UTC, 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 SPF pass by best guessing: >> >> Received-SPF: pass (google.com: best guess record for domain of >>

Re: what's best guess record for SPF

2021-12-09 Thread Piper H
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 SPF pass by best guessing: > > > >

Re: what's best guess record for SPF

2021-12-09 Thread raf
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 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) >

Re: what's best guess record for SPF

2021-12-07 Thread Benny Pedersen
On 2021-12-07 13:28, Togan Muftuoglu wrote: "Piper" == Piper H 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

Re: what's best guess record for SPF

2021-12-07 Thread Bill Cole
On 2021-12-07 at 06:55:54 UTC-0500 (Tue, 7 Dec 2021 19:55:54 +0800) Piper H is rumored to have said: So what's the best guess record by google? Only Google knows for sure. They do whatever their "best guess" is for domains without working SPF records. My best guess is that it probably

Re: what's best guess record for SPF

2021-12-07 Thread David Bürgin
Piper H wrote: > 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

Re: what's best guess record for SPF

2021-12-07 Thread Togan Muftuoglu
> "Piper" == Piper H 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>

AW: what's best guess record for SPF

2021-12-07 Thread Ludi Cree
: owner-postfix-us...@postfix.org Im Auftrag von Piper H Gesendet: Dienstag, 7. Dezember 2021 12:56 An: Postfix users Betreff: what's best guess record for SPF I sent an email from my t-online.de <http://t-online.de> account to gmail. Gmail shows SPF pass by best guessing: Receiv

what's best guess record for SPF

2021-12-07 Thread Piper H
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