Re: [OT] SPF - Do you use it

[lst_hoe02]

Zitat von Reindl Harald <h.rei...@thelounge.net>:

Am 05.10.2012 16:04, schrieb lst_ho...@kwsoft.de:

Zitat von Titanus Eramius <tita...@aptget.dk>:

Slightly off topic. I hope it's OK when the mail is marked as such.

I was just wondering if the users of this list use SPF in any way, and
if so, to what extend?

We have considered SPF some five years ago but after second thought ditched it completely: - It dos not really help against spam because the spam-farms also can set proper SPF

this point is simply wrong

a spam-farm CAN NOT set a SPF that whatever ip is allowed
to send mails with my envelope - simply because they are not
the dns-admin of my zones


SPF is NOT a spam-protection

it is designed to prevent forged sender-addresses which in
the worst case results in multiple auto-replies between
completly univolved persons which may over-react and
start blacklisting servers which are not the root-cause

the real problem is that not EVERY domain has SPF records
and that is why it doe snot help as much as it could, you
are part of this problem because ANYBODY can send me spam
with yur sender-address and only blacklists and bayesian
filters prevents my server to send you auto-replies for
such messages if i am at vacation

Regards

Andreas

This is your opinion. Mine is i don't care what sender-addresses spam has but i care about preventing spam from reaching end users. The most spam we see are from well connected spam-farms with their own throw-away domains and proper SPF/DKIM set. So no, SPF/DKIM is not useful for us in any way but certainly you are free to use it the way you like and as long as you like.

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