06:09:56 11164 check control = submission/domain=
so it does this
after the rcpt to:
I then do data\nSubject: Foo\nSender: email@example.com\n
then it tells me the header's recieved
it accepts the headers...
it adds a From, which is fine, but it accepts the Sender I specified
the weird thing is, according to the docs, in submission mode, teh From header will be added if one isn't, but it won't be if not in submission mode. A from header is added, it's clearly in submission mode
but then the docs say that in submission mode, any existing sender: lines are removed, but they aren't.