Re: problems with cbl.abuseat.org

On Thu, Jun 30, 2022 at 9:55 AM Jeremy Ardley <jeremy@ardley.org> wrote:

I'm using postfix as my MTA and lately I've been missing a significant fraction from my usual mail

e.g. email from linkedin and spamassassin list.

Tracking it down I see they are all getting rejected by abuseat. e.g.

Jun 30 14:20:09 egde postfix/25pass/smtpd[21040]: NOQUEUE: reject: RCPT from mail.openbsd.org[199.185.178.25]: 554 5.7.1 Service unavailable; Client host [199.185.178.25] blocked using cbl.abuseat.org; Error: open resolver; https://www.spamhaus.org/returnc/pub/172.68.1.20; from=<owner-libressl+M1127=jeremy=ardley.org@openbsd.org> to=<jeremy@ardley.org> proto=ESMTP helo=<mail.openbsd.org>

I just ran into this problem as well -> https://twitter.com/ClaudioKuenzler/status/1554559303507492865

Starting yesterday (August 2nd 2022) afternoon, all incoming mails are being rejected due to a "blocked using...". This concerns all DNSBL managed by Spamhaus.

The reason is that Spamhaus stopped serving their DNSBL via public DNS resolvers, such as Cloudflare's 1.1.1.1 or Google's 8.8.8.8 and 8.8.4.4 resolvers.

See: https://www.spamhaus.com/resource-center/if-you-query-spamhaus-projects-dnsbls-via-cloudflares-dns-move-to-the-free-data-query-service/

The solution, according to Spamhaus support, is to register for a free account and use their DQS (Data Query Service).

I just did that this morning and although I was assured this would be a free of charge account, I now received a quote of USD 450 per year.

I guess that was it then with Spamhaus.

cheers,