I tried to reach the larbin project owner but I get the
following error, so I'm posting this here.
(reason: 550 5.7.1 <firstname.lastname@example.org>...
Either larbin does this as a default, or someone has
configured their version so, but I would appreciate it if
someone make sure that the the user-agent field for
larbin is *not* email@example.com. I've gotten
several complaints, and I don't really appreciate it.