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today I see thath one e-mail received have header Return-Path different from "from" header, and antispam have checked spf and other related to domain in Return-path header.
But if Return-Path not exist on e-mail header I think antispam check "from" header .. ?
Exist an "official" order list of antispam header checks ?
GRAFFITI — It's Communication
Riva del Garda (TN), I-38066 – Località Pasina 46
Milano, I-20129 - via Lamberto De Bernardi 1
Verona, I-37134 - via Legnago 126
San Francisco, US-94111 California – 275 Battery St, Suite 2600