indeed very annoying. my understanding is they don't want to give spammers any signal whether their messages was recognized as ham or spam. i would love some i

indeed very annoying. my understanding is they don't want to give spammers any signal whether their messages was recognized as ham or spam. i would love some insights in how smart spammers are in actually leveraging such information. most spam seems to be hammering attempts that don't take failure feedback into account. in my mail server, messages classified as junk keep getting temporarily rejected with a generic error message. at least the (legitimate misclassified) sender gets a delayed dsn, and finally feedback that a message wasn't received. it seems many mail servers/services think it's more important to not give a signal to spammers than it is to give a useful signal to legitimate but misclassified users. perhaps they think their classification is really great and doesn't misclassify...