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Are you getting any telemetry from notifications on the feedback topics?
Hello and thank you for contacting AWS re:Post!
I reviewed your information and have some feedback for you. I used the message IDs provided in your post to confirm the messages were soft bounces due to DMARC authentication failures. SES is returning the error provided by the receiving mail transfer agent (MTA); the error is not originating from SES but being passed back through SES. The email used to send the message is showing verified, but custom MAIL FROM address is showing a pending status.
550-5.7.26 Unauthenticated email from spjimr.org is not accepted due to domain's DMARC policy. Please contact the administrator of spjimr.org domain if this was a legitimate mail. Please visit https://support.google.com/mail/answer/2451690 to learn about the DMARC initiative.
Please also visit the AWS documentation link for details on complying with DMARC using SES (1) and this AWS documentation for setting up custom MAIL FROM domain (2), which includes instructions for both verified domains and verified email addresses. Looks like you are trying to use a custom MAIL FROM using a verified email address.
Thank you!
-- Resources --
- https://docs.aws.amazon.com/ses/latest/DeveloperGuide/send-email-authentication-dmarc.html
- Setting up a custom MAIL FROM domain - Configuring the MAIL FROM domain - https://docs.aws.amazon.com/ses/latest/DeveloperGuide/mail-from.html#mail-from-set
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