On Feb 8, 2024, at 01:56, Matus UHLAR - fantomas via Postfix-users
<postfix-users@postfix.org> wrote:
I have removed postgrey from servers I manage a few years ago.
- without good exemption lists, you'll run into hours long waiting for
email from various mail services that attempt multiple times from
multiple IP addresses, e.g. microsoft or google.
I implemented postscreen instead that has similar functionality but is a bit
more safe to use.
On 08.02.24 13:05, Doug Hardie via Postfix-users wrote:
I implemented postscreen quite a while ago. I don't see where or how it
introduces a delay to force the originating MTA to queue and try later.
It does not introduce _this_ kind of delay, because it was the main reason
for noticeable delays of incoming mail I mentioned in my last e-mail.
It has multiple benefits against bots, like:
- few seconds delay for refusing clients that send helo/ehlo before esmtp
greeting (I have used this for years with sendmail)
- dnwsl/dnsbl scoring system.
These are pretty safe to use.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Nothing is fool-proof to a talented fool.
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