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Yeah, there are reports of Gmail setting the Return-Path to the primary domain going back a decade ago. That makes the alternative domain pretty useless if you
by speleding 4y ago
Yeah, there are reports of Gmail setting the Return-Path to the primary domain going back a decade ago. That makes the alternative domain pretty useless if you want to get SPF passing. Fastmail does the right thing FWIW, they switch the Return-Path to the alternative domain when you send from there.