Until their user sets up a custom domain with its own SPF record Amazon SES will send using a default subdomain of amazonses.com.
They do encourage users to send from their own domain, but they do not require it before using Amazon SES. Mike Hillyer ________________________________ From: mailop <mailop-boun...@mailop.org> on behalf of Benoit Panizzon via mailop <mailop@mailop.org> Sent: Monday, September 25, 2023 8:24 AM To: mailop@mailop.org <mailop@mailop.org> Subject: [mailop] Amazon SES using SAME sender Domain for multiple customer? Hi List... There is a company which is sending a lot of misdirected/unwanted email via Amazon SES and has failed to react to my attempts to contact them by email and phone in the last 14 days or so to try to solve the issue. Usually I then go ahead and block the envelope-sender domain. In this case: @eu-west-1.amazonses.com But as this domain does not contain any similarity to the Header From Username I had a quick look at our logs and realized, this would most probably cause a lot of collateral damage. Does anyone know, why Amazon is not using their customer's domain as envelope sender? The Username part looks like a completely new random string on every email sent. Or is there a way to match one specific Amazon SES customer? Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________ _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
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