How can you know when you're about to send a bounce to a backscatter? I'd love to know this!
Alternatively attempt to send a message to a nonexistent address on your MTA using telnet which should throw an error after "RCPT TO" if the server is configured correctly Steps to test SMTP via telnet: https://my.esecuredata.com/index.php?/knowledgebase/article/...
My understanding was that a backscatter uses an email that is not his, in order to deliver a message without sending it directly (and making the bounce server act like a spammer).
Am I missing something?
[1] https://willem.com/blog/2019-09-10_fighting-backscatter-spam...