On 2/3/2021 10:06 AM, Rob McEwen via mailop wrote:
On 2/3/2021 8:57 AM, Kevin A. McGrail via mailop wrote:
Hello all, if anyone from AT&T is here, the @mms.att.net gateway to
email is using an SPF record with ?ALL [ip4:166.216.152.0/24 ?all]
and blocked by invaluement RBL.
Kevin,
It was 1 IP that had gotten listed at invaluement, /not/ a /24 or
subnet. It just got listed yesterday, and there hadn't been a single
delist request sent to us about this yet. We have just about all such
ISP outbound ranges in our local WL already, but occasionally miss
something. And even then, our false positive prevention filter is
/usually/ excellent at otherwise preventing a listing, even when
occasional egregious spam is sent from a normally-OK ip. I've delisted
this IP and have taken further steps to prevent this from happening in
the future. Hopefully, it will be apparent to others that you finding
this important enough to mention on mailop, where these are rarely
ever mentioned, illustrates the rarity of this situation. As
mentioned, this is already delisted and WL'ed.
+1 I love and pay for Invaluement RBL. I mentioned it on maillop so
AT&T will fix the poor mail server hygiene. :-)
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