If someone does that, it's a good method to land on basically any spam blacklist out there.
Most larger providers like mailgun will tell you if you're bouncing a lot of mails and reduce your reputation. Same for gmail even.
it also helps if you report senders that repeatedly bounce that way to spamlists. That usually gets a lively reaction.
If someone does that, it's a good method to land on basically any spam blacklist out there.
Most larger providers like mailgun will tell you if you're bouncing a lot of mails and reduce your reputation. Same for gmail even.