Fix DMARC on email delivery through SES

[stevemayne]

Emails delivered through SES do not have valid DKIM signature and are being caught by spam filter

ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@amazonses.com header.s=pgxy5mtxzx6eoyytua4nvvg26jbuf6lj header.b=Y5VCS4YD;
       spf=pass (google.com: domain of 010b0192fccb4e88-583e76cb-dd4d-44ba-bea4-602bb089a49d-000000@eu-west-2.amazonses.com designates 23.249.218.14 as permitted sender) smtp.mailfrom=010b0192fccb4e88-583e76cb-dd4d-44ba-bea4-602bb089a49d-000000@eu-west-2.amazonses.com;
       dmarc=fail (p=QUARANTINE sp=NONE dis=QUARANTINE) header.from=askcoai.com