Can you paste the headers you received in a reply?
Are you getting any output in the logs?
I just tested adding that header in meteor shell and it worked fine
And received this:
From 0@xxx 2017-06-18 23:21:47 +0000
Received: from DIR-03 ([10.20.147.193])
by IMAP-26 (Dovecot) with LMTP id S2oQAQoLR1ngHwAAYYZmRw
for <firstname.lastname@example.org>; Sun, 18 Jun 2017 19:21:46 -0400
Received: from MTA-05.privateemail.com ([10.20.147.15])
by DIR-03 (Dovecot) with LMTP id O8zjHAoLR1mTRAAAtNLlyA
; Sun, 18 Jun 2017 19:21:46 -0400
Received: from Nimisha.local (unknown [10.20.151.245])
by MTA-05.privateemail.com (Postfix) with ESMTPA id D0CAF60048
for <email@example.com>; Sun, 18 Jun 2017 23:21:45 +0000 (UTC)
Date: Sun, 18 Jun 2017 23:21:44 +0000