These "acknowledgements" sent to me are rather useless, and indeed quite insulting, if they don't actually confirm that the server that runs the list will actually POST my message, rather than merely say it "was successfully received by the cypherpunks mailing list." Because TWICE I recieved such a "acknowledgement" and yet the message didn't post.
Here's something even more alarming: I don't get "acknowledgement messages" at all, yet my messages show up in my feeds from the server. I seen strange, inconsistent behavior on the hackerspaces mailing list as well. It's like they black-ball or moderate messages only from certain senders -- and do it invisibly so no one knows such activity is happening. It's called black-balling. Who knows if you're a woman and get this treatment? marc0s