Re: FYI: NANOG Mailing List IPV4 hosts are in Spamhaus RBL

[Bryan Fields via NANOG <nanog () lists nanog org>]

On 8/11/25 12:02 AM, Michael Rathbun via NANOG wrote:
> On Sun, 10 Aug 2025 23:44:50 -0400, Bryan Fields via NANOG
> <nanog () lists nanog org> wrote:
>
> > This is being looked at.  Unsure why (and they don't give much info),
> > but lists.nanog.org is only used for the list, and doesn't relay
> > non-list emails.
>
> I work in the email deliverability field (for honest senders); the SBL's
> primary design intent was catching "snowshoe" operations, that spread the
> spamload over multiple IP ranges and/or domains.  None of that behavior can
> be associated with this IP; however, we have some (rare) occasions when one
> of our clients, sending confirmed opt-in email from a single domain and
> netblock winds up listed.  Normally Spamhaus is quite responsive in
> resolving these issues.

It was showing on the CSS Blocklist, not that it makes much difference. 
As of this morning, it's been removed and the queue is processing down. 
What I see lots of (and is infuriating) is people will click "report 
spam" in their MUA rather than unsubscribe.  Perhaps I assume to much 
for members on a technical list to know how to unsubscribe from a list 
by reading the RFC-2919 headers.

I've found RBLmon to be a useful tool, but I don't think it's been 
updated in about 15 years and doesn't support IPv6.

BTW postmaster () lists nanog org and admins () nanog org are real accounts 
that have real people looking at them.  I guess it's kinda retro in that 
regard :-D

Thanks,
--
Bryan Fields

727-409-1194 - Voice
http://bryanfields.net
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