It is the correct title of the sent letter from GroupWise in the Internet ?

From the GrupoWise8.0.2 Reply to the Received mail. Reply to the foreign user (not Groupwise system).

User received my answer in the mail header see:
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X-Mailer: Novell GroupWise Internet Agent 8.0.2
Date: Wed, 23 Feb 2011 16:18:42 +0200
From: "Sergey Koltogyan" <ksr@ami.ua>
To: <skoltogyan@gmail.com>,
"=?UTF-8?B?0KfQuNGB0YLQuNC70LjQvdCwINCi0LDRgtGM0Y/QvdCwINCd0LjQutC+0LvQsA==?=

=?UTF-8?B?0LXQstC90LA=?=" <chistilina_tn@sab.donetsk.ua>
Subject: =?UTF-8?B?0J7RgtCy0LXRgjog0YLQtdGB0YIgKyAx?=
References: <005101cbd33d$78623940$6926abc0$@sab.donetsk.ua>
In-Reply-To: <005101cbd33d$78623940$6926abc0$@sab.donetsk.ua>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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As you can see - between lines there is a BLANK LINE !!
Presence of blank lines in letter HEADER is Normal or Bad( disallow in the RFC) ?

Serg