A Problem Report may contain any mail header field described in the
Internet standard RFC-822. The
send-pr tool can be configured
either to submit PRs to the support site by e-mail or by talking
directly to the
gnatsd network daemon on the gnats server.
This is also true for other client tools such as Gnatsweb. Even when
these tools are set up submit PRs directly to
gnatsd, they will
still include mail header fields that identify the sender and the
subject in the submitted PR:
send-prare used; should always contain the originator's e-mail address.
One of the configurable options for gnats is whether or not to
Received-By headers, which often consume a lot of
space and are not often used. See The dbconfig file.