On 2024-07-09 at 13:53:47 UTC-0400 (Tue, 9 Jul 2024 11:53:47 -0600)
Anne P. Mitchell, Esq. via mailop <amitch...@isipp.com>
is rumored to have said:
Receivers don't block email from new IPs by default; they block them
when they notice something amiss with the email (be it improper
authentication, spam complaints, or something else).
That's not 100% true. Most receivers don't, some clearly do.
My 2 (satisfactory, if a bit slow) experiences with AT&T blocking IPs
have both been with IPs that had never previously sent any mail. Until
AT&T unblocked them, AT&T had never seen any mail from them at all in
the lifetime of the Internet. Both were in an ARIN-allocated /21 network
with accurate contact info.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo@toad.social and many *@billmail.scconsult.com
addresses)
Not Currently Available For Hire
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