Amazon SNS does not confirm my link point url

Your software
My Mautic version is: 5.03
My PHP version is: 8.1
My Database type and version is:

Your problem
My problem is:
Amazon SNS does not confirm my link point url. I tried http and https and different URLs and nothing. These are the URLs I tried:
https://mk.castillapropiedades.com.ar/mailer/callback
http://mk.castillapropiedades.com.ar/mailer/callback
https://mk.castillapropiedades.com.ar/mailer/amazon/callback
http://mk.castillapropiedades.com.ar/mailer/amazon/callback
https://mk.castillapropiedades.com.ar/mailer/amazon_api/callback
http://mk.castillapropiedades.com.ar/mailer/amazon_api/callback

If I enter the links the only one that does not return a 404 is: https://mk.castillapropiedades.com.ar/mailer/callback. It says: “No email transport that could process this callback was found”.
And in SNS it is pending confirmation.

These errors are showing in the log:

Steps I have tried to fix the problem:

Hi,
Amazon API callback doesn’t work in Mautic 5.
Plz use fetch email method.
https://docs.mautic.org/en/5.x/channels/emails.html#bounce-management

Hi Joey
I’m looking for instructions how to set up sns callback for Mautic 5, but can’t find any. In your post you wrote that Amazon API callback doesn’t work and that we should follow instructions on the link you posted (fetch email), but there it says:
“Some Email services overwrite the return-path header with that of the account’s Email (GMail, Amazon SES). In these cases, IMAP bounce monitoring won’t work.”
So what is the solution for setting up the bounces monitoring in Mautic 5?
Thanks for your great work, I follow your Youtube channel :+1:.

Regards,
Jernej

Hi, thx for the kind words, this plugin will confirm your subscription, but bounces/complaints feedback loop doesnt work yet. Let’s keep an eye on it: