[GTALUG] SPF and Anti Forgery

[Dave Collier-Brown]

On 2019-09-20 8:55 a.m., ac via talk wrote:
>   I have noticed something interesting in
> the email you just sent to the list, so I have started a new thread... :)
>
> Your sent email, came in marked as SPAM, and I wondered why...
>
> yes, it is from Google, who sends a lot of spam, scams etc. but that
> alone should not get it marked as spam... So, I looked and it is so
> interesting... (maybe I need a life :) )
>
> Dave, in the headers you literally have three email addresses:
> Relayed For: <davec-b at rogers.com> - No SPF / Anti Forgery
> Cc:<davecb.42 at gmail.com> - Which is currently a ->  ~all
> Reply-To: davecb at spamcop.net and your SpamCop receive only addy,
> also a -> ~all
>
> Which is why your relay is scored additional, as this is also what
> spammers do very frequently (They use (rather abuse) @gmail with a reply
> to of @outlook.com, etc)
>
> It is also interesting, that Google, probably in the interests of
> becoming a better netizen?, has again started including relay headers,
> again, after not including same for a long while...
>
> Anyway, long winded, but here is the question: Do you not find many
> fake sent from and backscatter issues to your @rogers.com? If yes, why
> even still use it in your Thunderbird config?
>
> Andre

That's an artifact of fighting with outgoing mail relays: in principle
it should go out via Rogers Yahoo, but it and Google take turns being
broken. Spamcop was bought by cisco, who dropped their outgoing relay
offering, otherwise that's all Id ever use.

This one may be better or worse, as it's from my work address. Alas,
they use paid-for Microsoft services, which may be broken in different ways.

--dave

--
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
dave.collier-brown at indexexchange.com |              -- Mark Twain


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