Blocklists and the collateral damage of shared sending

Dead Internet Theory: Blocklists help receiving systems reject abusive mail, but shared IP addresses and hosting networks can create collateral damage when unrelated senders inherit the consequences of another customer's behavior.

https://switchboardtechservices.com/articles/dit-blocklists-and-the-collateral-damage-of-shared-sending-infrastructure/

By Switchboard Tech Services · Originally published 2026-06-17

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