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Delivery Status Notification (Failure) - hard bounces vs soft bounces
  • Vote Up0Vote Down SusanSusan
    Posts: 2Sendy user

    Each newsletter I receive a bunch of the following emails from Amazon:

    From: MAILER-DAEMON@amazonses.com Subject: Delivery Status Notification (Failure) An error occurred while trying to deliver the mail to the following recipients: redacted@redacted.com

    They often include an attachment. For example, one has the following contents:

    Reporting-MTA: dsn; a8-25.smtp-out.amazonses.com

    Final-Recipient: rfc822; redacted@redacted.com Action: failed Diagnostic-Code: smtp; 553 5.1.2 Unknown mail server. Could not find a mail server for 307knoxrevords.com Status: 5.1.2

    On my last newsletter to about 2.5k subscribers, I got about 20 of these emails.

    My guess is this is a notification of a "soft bounce", with my understanding being that Amazon will try again before filing it as a "hard bounce" and giving up. This would explain why in Sendy it reported 0% bounces.

    Is this an accurate guess as to what's going on here?

  • 5 Comments
  • Vote Up0Vote Down BenBen
    Posts: 3,549Sendy support

    Hi Susan,

    First of all, you need to upgrade to the latest version of Sendy as you're currently using the extremely old version 1.1.5.

    Later versions of Sendy will disable 'Email Feedback Forwarding' in your Amazon SES account so that you won't receive emails like these as bounces and complaints will be automatically registered in Sendy when they happen.

    Lastly, hard or soft bounces, they will all be handled by Sendy.

    Please upgrade to the latest version ? http://sendy.co/get-updated

    Thanks.

    Best regards,
    Ben

  • Vote Up0Vote Down SusanSusan
    Posts: 2Sendy user

    Gotcha - I actually updated after I posted that message. In addition to finding out more about those emails, it was on my "Sendy housekeeping" to-do list. : )

    So it sounds like with my next send, because of the upgrade, I won't receive these emails anymore - Sendy wil handle them all.

    Thanks for the prompt feedback; Sendy is a great product.

  • Vote Up0Vote Down SusanSusan
    Posts: 2Sendy user

    Hi Ben -

    This morning we ran our first newsletter since the upgrade, and are still receiving the emails from amazon. Reference: http://note.io/1r05ZlR

    Any thoughts?

  • Vote Up0Vote Down BenBen
    Posts: 3,549Sendy support

    You can disable Email Feedback Fowarding in your SES console:

  • Vote Up0Vote Down SusanSusan
    Posts: 2Sendy user

    Thanks, settings in place.

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