Comment 6 for bug 56538

As far as mails to the -changes lists go, we've always used the uploader's email address as the sending address, as we view it more as a forwarding list, rather than a generated mail. You're uploading the .changes, then it's forwarded to -changes, essentially unaltered, as if you'd written the mail in the first place and sent it to the list.

This is pretty useful when reading the -changes list archives, so we can see at a glance who uploaded what, without seeing a bunch of useless mails from "Ubuntu Installer", and it's also quite handy to be able to just smack Reply and tell off an uploader for a particularly silly upload they've just made, or what-have-you.

Now, one could argue that these mails need to be sent twice, with two different submitters, so you, the uploader, get a mail in your inbox from "Ubuntu Installer" telling you that your upload was accepted, while the -changes mailing list gets a mail from you with the contents of the .changes. Of course, I think this is more or less how it's done now, modulo a few buggy behaviours.