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

[Michael Rathbun via NANOG <nanog () lists nanog org>]

On Mon, 11 Aug 2025 02:25:35 +0000, Lucien Hoydic via NANOG
<nanog () lists nanog org> wrote:

> This from one of the mail servers I manage:
>
> H=lists.nanog.org [50.31.151.68] F=<nanog-bounces () lists nanog org> rejected RCPT <[x](mailto:nanog2 () adns 
> net)xxxx () yyyyy com>: host is listed in sbl.spamhaus.org
>
> Not sure anyone cares - mail still comes in via the IPv6 interface, but interesting that the listserv tries IPV4 1st.

Actually, according to records in the logs, 50.31.151.68 has been flapping
in and out of the SBL every few hours since 8 Aug, around 1600 UTC.

Currently, it is not listed.

mdr

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