[Mailman-Users] Best way to slow down all the spam to my lists?

[Chromatest J. Pantsmaker]

I think I'll look into this next.  It seems that the postgrey
implementation that I followed from a previous email has stopped the spam,
but it's also stopped all other mail also!  doh!

On Fri, Dec 13, 2019 at 6:40 PM Gary R. Schmidt <grschmidt at acm.org> wrote:

> On 12/12/19 12:46 PM, Chromatest J. Pantsmaker wrote:
>  > I'm the system admin (though I'm not great at it).  I have a problem
> with
>  > spam.  Hundreds of spam messages are posted to my lists each week.
> They're
>  > non-subscribers so they don't go to the lists, but they *do* go to
> me, the
>  > list owner which floods my inbox.
>  >
>  > I'm looking at the page on how to use SpamAssassin:
>  >
>
> https://wiki.list.org/DOC/4.23%20How%20do%20I%20use%20SpamAssassin%20with%20Mailman%3F?action=show
>  >
>  >
>  > Is that the best way to do what I need?
>  > If so, what's the best method to use in my case?
>  > My system:
>  > Mailman 2.1.20
>  > Apache2 / 2.4.18
>  > Postfix 3.1.0
>  > Ubuntu 16.04.1 LTS
>
> With Postfix, you should activate the built-in SPAM control, "postscreen".
>
> The details on how to use it are in POSTCSCREEN_README when you install
> from source, I don't where/if Ubuntu puts it, or if they build it for
> their distro, but it just works.  "man postscreen" should get you started.
>
> I have it checking spamhaus.org, spamcop.net, and barracudacentral.org
> for blacklisting.
>
> I sometimes add IP ranges to "/etc/postfix/postscreeen_access.cidr",
> (they've mainly been from Brazil, Korea, and China), when I notice a new
> source that the blacklists haven't yet found, blocking out vast swathes
> of the internet doesn't trouble me.
>
>         Cheers,
>                 Gary    b-)
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