[sdiy] spoof warning on emails from synth-diy

cheater cheater cheater00social at gmail.com
Sun Mar 28 23:48:39 CEST 2021


Here we go

On Sun, Mar 28, 2021 at 10:40 PM Ben Stuyts <ben at stuyts.nl> wrote:
>
> Ok, found something: gmail.com has a DMARC record with a policy record “p=none”. This list only munged messages when p=reject or p=quarantine. Perhaps they changed that, but still check for it.
>
> In any case, the list should now munge the From: address when p=none. Cheater, can you reply to this message so we can check?
>
> Sorry for all the admin babble,
> Ben
>
>
> On 28 Mar 2021, at 21:46, Ben Stuyts <ben at stuyts.nl> wrote:
>
> Well, if there is DMARC info, then the From: address should be properly munged and a Reply-To: will be added. You would see “From: Name Via Synth-DIY <synth-diy at synth-diy.org>”. I did a quick check the settings didn’t change/fall over for the mailing list, but they seem to be OK.
>
> Last week the name server infra-structure of the synth-diy.org hosting firm has been severely DDoS’ed, perhaps there are still some loose ends. I’ll go test some more...
>
> Ben
>
>
> On 28 Mar 2021, at 19:53, cheater cheater <cheater00social at gmail.com> wrote:
>
> Yeah, I've clicked it right away. I don't think it's greylisting or reputation. I think it might have to do with the headers. Specifically, the fact that the sdiy mailer uses my email address as the "From" header. There might be a better header that doesn't necessarily "impersonate" the original sender. For example, maybe Original-From would be a better choice here, and meanwhile use the sdiy email address as the From address.
>
> On Sun, Mar 28, 2021 at 7:31 PM Ben Stuyts <ben at stuyts.nl> wrote:
>>
>> Thanks for the heads up. Please click on the ‘Looks safe’ button to train Google’s algorithm. If you ignore it, it can only get worse.
>>
>> The issue is probably DKIM-related, which is a problem with any mailing list. Google has some tools for domain postmasters, and I’ve been registered for a long time. Last month looks OK:
>>
>> <PastedGraphic-3.png>
>>
>> and:
>>
>> <PastedGraphic-2.png>
>>
>> Best,
>> Ben
>>
>>
>> On 28 Mar 2021, at 18:06, cheater cheater <cheater00social at gmail.com> wrote:
>>
>> Hi Ben, I believe you're the list owner now. I've just noticed this
>> issue. Could the mailing list need a configuration update?
>>
>> https://imgur.com/a/AcW6lzz
>>
>> Cheers
>>
>>
>
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