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SNS Bounces confirmed instantly, Complaints gives an unreachable endpoint
  • Like others, I'm trying to set up the SNS. My sendy install is running in a virtual host on DigitalOcean and I was able to confirm the bounces topic instantly with the endpoint It found the endpoint and I got back the proper value for the confirmation.

    When I try making the complaints topic though, I keep getting: " Invalid parameter: Unreachable Endpoint (Service: AmazonSNS; Status Code: 400; Error Code: InvalidParameter; Request ID: c991e2af-019c-5324-b64d-ae3981c65cbe)". The endpoint for it is and it loads fine from my browser and my cell phone as well. If I go to modify the source code I can make it print text and I can see it printing fine on the browser.

    Is there something I'm missing here? I'm running out of ideas haha

  • Vote Up0Vote Down BenBen
    Posts: 3,643Sendy support

    That's very strange, if bounces endpoint works, there's no reason why complaints won't.

    Can you please re-upload a fresh copy of /includes/campaigns/complaints.php to your server.

    Also make sure you used 'HTTP' protocol for your SNS endpoint.

  • Sorry for the late reply Ben! I was able to get it to work, but I have no idea what fixed it. I even added debug code to the complaints.php file just to see if it was being contacted successfully by Amazon (it was, both on success and failure). I used the exact same settings every single time and I removed it and added it back a few times and eventually it was successful.

  • Vote Up0Vote Down BenBen
    Posts: 3,643Sendy support

    I have learnt from another user that having a 'space' either appended or prepended to your SNS endpoint throws an 'Unreachable Endpoint' error. So I'm almost 100% sure you got that error previously because of an unintentional space in your SNS endpoint.


    Best regards,

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