On 2025-06-05 at 02:50:17 UTC-0400 (Thu, 5 Jun 2025 18:50:17 +1200)
Mark Foster via mailop <[email protected]>
is rumored to have said:
Anyone from Yahoo out there?
My mail platform refused an email from Yahoo today (an account
notification sent to an alternate contact address linked to a
yahoo.com account) because the IP address doing the SMTP delivery was
outside the SPF record (an adjacent subnet) i.e. there's an error in
the relevant SPF record; there's many ip4:96.47.26.x addresses in the
SPF record, but the inbound connection came from 96.47.25.0/24... so
obeying the -all had negative consequences.
I don't see either of those blocks in the yahoo.com SPF record. Both are
registered to "E-Dialog," which is an archaeological name for an entity
now doing business as Zeta (zetaglobal.com.)
What SPF record are you referring to?
As a mere yahoo.com free-tier customer i've no idea how to pass this
information to someone with cloo, but I can't be the only one who
(nearly) missed an important notification due to an apparent
misconfiguration and/or SPF record being incorrect.
FWIW, all of the mail I've seen in recent months from those 2 /24 nets
is sent using what are presumably the domains of Zeta customers, without
anything referencing Yahoo.
Tangentially, Zeta seems to be an example of an ESP doing things right
spam-wise. I had no idea they were as big as they are until I looked for
their nets in logs. I've never had a user complain about mail from them,
despite a steady flow from their nets using many different sender
domains.
--
Bill Cole
[email protected] or [email protected]
(AKA @[email protected] and many *@billmail.scconsult.com
addresses)
Not Currently Available For Hire
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