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smtp.mailfrom=your-group+bncBCA5XFGRYQLCBEHHVS5AKGQED3J2I7I@yourdomain.com;
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From: Chris <chris@mydomain.com>

X-Original-Sender: chris@mydomain.com
X-Original-Authentication-Results: mx.google.com;       dkim=pass
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 designates 2607:f8b0:400c:c05::233 as permitted sender)
smtp.mailfrom=chris@mydomain.com;
       dmarc=pass (p=NONE dis=NONE) header.from=mydomain.com

Return-Path: <my-group+bncBCGJ3NF22YBRBTXIVS1RKGQEIWR5E6Q@mydomain.com>
Authentication-Results: mx.google.com;
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From: "'You' via my-group" <my-group@ mydomain.com>