If this isn't too far off topic, is it useful to register with 

https://www.dnswl.org/?p=209

The only servers that reject my email do so because I use DigitalOcean. Spectrum for example. Oddly enough Linode which has a fair number of hackers doesn't get the same treatment. 

The only odd TLDs that have become popular are "aero" and "info."  I will probably add some on your list though lately all my spam comes is Google related. 

I met one person who used a  "life" TLD. He was starting a consulting business for fire resistant home designs (hence life) and thought he would be clever with the TLD. I stopped a woman from using "design." 

From: sebastian@sebbe.eu
Sent: February 12, 2022 5:25 AM
To: dovecot@dovecot.org
Subject: Sv: Sv: Sv: dovecot mailing list (this mailing list), DKIM, SPF and DMARC

Yep. Its a lot of TLDs that is banned at me, but I haven’t had any problems with .ru so .ru isn’t yet banned.

 

Here is my TLD banlist:

 

  deny

    message = 5.7.1 Banned TLD where sending IP is not listed on DNSWL ( https://www.dnswl.org/selfservice/?action=register )

    condition = ${if eq {$acl_m4}{dnswl_whitelisted}{no}{yes}}

    sender_domains = ^(?i).*\\.(accountant|accountants|asia|auto|berlin|bid|buzz|camera|car|cam|cars|christmas|click|club|college|computer|country|cricket|date|design|download|exposed|email|fail|faith|fit|fun|gdn|global

|guru|help|host|jetzt|kim|icu|life|live|link|loan|london|media|men|mom|news|ninja|online|party|photography|pro|protection|pub|racing|realtor|reise|ren|rent|rest|review|rocks|science|security

|shop|site|solutions|space|storage|store|stream|study|surf|tech|technology|theatre|today|top|trade|university|uno|us|viajes|vip|vividal|wang|webcam|website|win|work|works|world|xin|xyz|zip|xn--.*)\$

 

This crap that ICANN started with “custom” TLDs is of more harm than useful. So much spam TLDs in the registry.

 

Från: dovecot-bounces@dovecot.org <dovecot-bounces@dovecot.org>För justina colmena ~biz
Skickat: den 12 februari 2022 14:06
Till: dovecot@dovecot.org
Ämne: Re: Sv: Sv: dovecot mailing list (this mailing list), DKIM, SPF and DMARC

 

The ".top" TLD is popular among Russian spammers, ".ru" is a little too obvious and honest for what it is, unless that's part of Biden's sanctions, the others you mention look like vice domains, but looking at GitHub:

* https://github.com/dovecot

There's an "Oy" which is a Finnish "osalliyhdistys" and a ".fi" -- I have not heard of recent hostility between Finland and Russia, notwithstanding the Ukraine situation. Your mail client is all configured in Swedish, but Sweden & Finland are not officially part of NATO, AFAIK, and Sweden has its own currency whereas Finland did give up the markka in exchange for the Euro some 20-odd years ago I don't recall.

On February 12, 2022 2:58:03 AM AKST, Sebastian Nielsen <sebastian@sebbe.eu> wrote:

Thats a TLD ban. Meaning *.ru is banned.

same applies for my domain for example, I ban *.xyz, *.date and a few others.

-----Ursprungligt meddelande-----
Från: dovecot-bounces@dovecot.org <dovecot-bounces@dovecot.org> För Lev Serebryakov
Skickat: den 12 februari 2022 12:08
Till: dovecot@dovecot.org
Ämne: Re: Sv: dovecot mailing list (this mailing list), DKIM, SPF and DMARC

On 11.02.2022 16:31, Marc wrote:

  (sorry for posting to list this, but I don't have any ways to contact Marc off-list now)

    Problem is, I need to unpack each of them to be sure, that these 
 are false positives and I'm afraid, that it could lower reputation of 
 my mail server IP address with major providers (like Google Mail).

How can you get a lower reputation? Afaik dmarc is just signing your outgoing messages.
  Marc, my domain already has problems sending mail to you, for example:

<Marc@f1-outsourcing.eu>: host spam1.roosit.eu[212.26.193.45] said: 553 5.3.0
     550We have blocked this toplevel because of spam. Use another toplevel
     until the maintainer has resolved these issues (in reply to MAIL FROM
     command)

--
// Black Lion AKA Lev Serebryakov

--
Sent from my Android device with K-9 Mail. Please excuse my brevity.