Two things, one of them not what it looked like.
An organizer fixture was built from a real, routable address. Every other
fixture in the codebase uses example.org or example.com, and this
repository is public, so that one was a personal address sitting in
public source for no reason -- the test asserts roles and participation
status and never reads either value. It is [email protected] now.
The names were wrong in the other direction. Three fixtures across two
files said "John Ellis", which is not the maintainer's name; it is
John Coffey. Being a name rather than a routable address, it leaked
nothing, but it was simply incorrect, and incorrect in the sort of place
nobody rereads.
The address and the name are separate questions and got separate answers:
the address is fictional because it is an address, and the name is real
because it is right. A message from [email protected] signed John Coffey
is exactly what these tests mean.
Found while checking, at the maintainer's prompting, whether the repo
leaked anything about the host it runs on. It does not -- the nginx and
deploy files here are the generic examples they claim to be, and the real
ones live in a private repository.
JMAP has an extension for this -- RFC 9007's MDN/send -- and Stalwart does
not implement it, so ihasmail assembles the RFC 8098 multipart/report itself
and sends it the long way round: raw MIME uploaded as a blob, imported,
submitted. That is also why the receipt lands in Sent, which is where it
honestly belongs.
The plumbing is the easy half. A receipt tells whoever asked that the address
is live and when the message was read, to an address the sender chose, so the
refusals are the feature: nothing marked Auto-Submitted (RFC 3834, or two
servers answer each other forever), nothing carrying Precedence bulk/list/junk
or a List-Id, nothing already acknowledged, nothing that never arrived. A
receipt aimed anywhere other than the sender is offered, but says so first.
There is no "always send" setting, only ask or never.
Sending is recorded with RFC 3503's $mdnsent keyword on the original rather
than remembered locally, so a second look -- or another client entirely --
knows not to ask again. Non-ASCII parts go base64 rather than 8bit, so
nothing rests on 8BITMIME surviving every hop.
Verified against the mock end to end: the blob uploads, the receipt imports
and submits, and the original reads back marked. Not yet exercised against
the live server.