test to tony Arnold for his postfix srvr

[Jeffrey Walton]

On Wed, Jun 18, 2025 at 7:20 AM Tony Arnold <a.c.arnold at gmail.com> wrote:
>
> On Wed, 2025-06-18 at 06:49 -0400, bruce wrote:
> > hey Tony
> >
> > as far as I see, list gets at least a few msgs per day.
> >
> > are u seeing this on ur srvr.
>
> No. Not seeing these. Your message didn't arrive either. I found this
> in the postfix logs:
>
> 2025-06-18T11:49:48+01:00 DiskStation1 postfix/smtpd[810]: NOQUEUE:
> reject: RCPT from lists.ubuntu.com[185.125.189.65]: 554 5.7.1 Service
> unavailable; Client host [185.125.189.65] blocked using
> sbl.spamhaus.org; Error: open resolver;
> https://check.spamhaus.org/returnc/pub/2400:cb00:913:1024::ac45:f705/;
> from=<ubuntu-users-bounces at lists.ubuntu.com> to=<tony at acasystems.org>
> proto=ESMTP helo=<lists.ubuntu.com>
>
> So, I've turned off DNS-based Blackhole List filter. Could you try
> replying to the list please? Hopefully, it'll get through this time!

Or whitelist the Ubuntu mailing list server(s):
<https://www.google.com/search?q=postfix+rbl_override>.

Jeff