On Monday 11 May 2020 10:04:34 G.W. Haywood via clamav-users wrote:

> Hi there,
>
> On Sun, 10 May 2020, Paul Kosinski via clamav-users wrote:
> > Our email handling is [...snip...]
>
> Mail system design isn't really the topic for this list, so I won't
> comment further on your setup.
>
> > (You might be surprised how much email to made-up user names ...
>
> Back in the 1980s I might have been surprised, but now about the only
> thing that surprises me with emails is when one arrives which should
> have been rejected by my filters.  It happens very rarely, and when it
> does I shout abuse at my screen.
>
> > P.S. G.W Haywood ought to consider something like our email reply
> > database.
>
> You asked for help.  I provided the help, and I explained that you can
> contact me via this list.  Please try to keep to the list topics.
>
> > When I replied to an email he sent me from what seemed to be
> > his private email address (i.e., not his clamav address), it was
> > held for a few days at his MTA, "timed out"
>
> No, if mail is delayed it's held on the sender's server, not on mine.
> That's the whole point - upping the ante for spammers.  Evidently my
> take on email is different from what you'd like it to be, in that you
> seem to think I should be trying harder to accept mail, whereas I'm
> always trying to find more ways to reject it.  My use of ClamAV, to
> stay on topic, isn't about protection from viruses but about rejecting
> the unwanted mail.  To that end some of the third party databases kick
> serious butt and at your request I've sent you privately a list of the
> databases that I use.  The official databases don't do much by way of
> rejecting junk mail, but that's not really why they exist so it isn't
> a criticism of them.
>
> As I've already explained to you, aside from the fact that your IPs
> are on a blacklist, _all_ Level3 IPs are blacklisted here.  Given the
> history of Level3 and CenturyLink (who bought Level3 in 2017, and who
> are also blacklisted here), that is unlikely to change anytime soon.
> If you're offended that my servers won't accept your private mail then
> please be assured that it isn't personal.  I'm just blocking garbage,
> and as I've explained there may unfortunately be collateral damage in
> some cases - such as if you're in one of over a hundred blacklisted
> countries, and/or you use IPs from one of a few named ASN owners, or
> one of a few dozen specific ASNs.  Regrettably AS3356 is one of those.
>
> > and was then bounced -- twice.
>
> Again no, my servers never bounce mail.  Either it's accepted, or it's
> rejected, or the sending server gives up.  Until one of those results
> appears there is the possibility of greylisting TEMPFAILs, but the way
> that SMTP works means that the _sending_ server retains responsibility
> for the message during the greylisting period.  Something like 30% of
> the IPs on the planet are firewalled here, so they can't even make a
> TCP connection.  The firewalling is dynamic, driven by a milter which
> uses a custom database of things like ASNs, countries, and some other
> things that I don't want to talk about in public.  If a firewalled IP
> tries to send mail it will get a "connection refused".  The Internet
> is infested by criminals, many of whom are sponsored by governments
> and have vastly greater resources than we do, so I make no apologies
> for that.
>
> You still seem to me to be worrying about the wrong things.

Somebody who says what needs to be said. Luv it, sic 'em GW

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>

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