Hello,
I'm testing emails after the installation of Zimbra and I got some problems with my sent emails. Every email I send is going to spam boxes (hotmail / gmail). There is the header of my last email sent:

Delivered-To: ramonflmr@gmail.com
Received: by 10.14.210.2 with SMTP id t2csp28611eeo;
Thu, 13 Jun 2013 06:32:01 -0700 (PDT)
X-Received: by 10.50.141.161 with SMTP id rp1mr319898igb.11.1371130320465;
Thu, 13 Jun 2013 06:32:00 -0700 (PDT)
Return-Path: <flmr@trevvo.com.br>
Received: from serv1.trevvo.com.br (serv1.trevvo.com.br. [192.157.245.34])
by mx.google.com with ESMTP id ih16si6688938igb.45.2013.06.13.06.31.59
for <ramonflmr@gmail.com>;
Thu, 13 Jun 2013 06:32:00 -0700 (PDT)
Received-SPF: pass (google.com: domain of flmr@trevvo.com.br designates 192.157.245.34 as permitted sender) client-ip=192.157.245.34;
Authentication-Results: mx.google.com;
spf=pass (google.com: domain of flmr@trevvo.com.br designates 192.157.245.34 as permitted sender) smtp.mail=flmr@trevvo.com.br;
dkim=pass header.i=@trevvo.com.br
Received: from localhost (localhost.localdomain [127.0.0.1])
by serv1.trevvo.com.br (Postfix) with ESMTP id 69A4614F40329
for <ramonflmr@gmail.com>; Thu, 13 Jun 2013 17:31:59 +0400 (MSD)
Received: from serv1.trevvo.com.br ([127.0.0.1])
by localhost (serv1.trevvo.com.br [127.0.0.1]) (amavisd-new, port 10032)
with ESMTP id uaZcKDWhr0rL for <ramonflmr@gmail.com>;
Thu, 13 Jun 2013 17:31:58 +0400 (MSD)
Received: from localhost (localhost.localdomain [127.0.0.1])
by serv1.trevvo.com.br (Postfix) with ESMTP id 70EE314F402D9
for <ramonflmr@gmail.com>; Thu, 13 Jun 2013 17:31:58 +0400 (MSD)
DKIM-Filter: OpenDKIM Filter v2.8.0 serv1.trevvo.com.br 70EE314F402D9
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=trevvo.com.br;
s=4AD8E0D2-D3D5-11E2-A292-2ACEBEECE33F; t=1371130318;
bh=KP9R+FK65c9A2peRXBZizJW6oVObms6xDqnPlRq3ELs=;
h=Date:From:To:Message-ID:Subject:MIME-Version:Content-Type:
Content-Transfer-Encoding;
b=DkaSwJ3BirSZBvfwKyMnJMiHcHRNF8/7rFaRANBMcJvM4XqHCfp1xEHGI5HrKqX8k
VICJGiqOGtrsD6b3Mq5TPBnoCsfvvygyLxoQuortb/t3/KxIgs7OIArPQ0839SJBdA
AwjXt0HrXi16wpVsa9VTr0QJ9kLYhl5Gy5NtrY1I=
X-Virus-Scanned: amavisd-new at serv1.trevvo.com.br
Received: from serv1.trevvo.com.br ([127.0.0.1])
by localhost (serv1.trevvo.com.br [127.0.0.1]) (amavisd-new, port 10026)
with ESMTP id IMHlWhxk87WO for <ramonflmr@gmail.com>;
Thu, 13 Jun 2013 17:31:58 +0400 (MSD)
Received: from serv1.trevvo.com.br (serv1.trevvo.com.br [192.157.245.34])
by serv1.trevvo.com.br (Postfix) with ESMTP id 0D5F414F402D3
for <ramonflmr@gmail.com>; Thu, 13 Jun 2013 17:31:58 +0400 (MSD)
Date: Thu, 13 Jun 2013 13:31:57 +0000 (GMT)
From: "Ramon O. Barbosa" <flmr@trevvo.com.br>
To: ramonflmr@gmail.com
Message-ID: <442031451.0.1371130317699.JavaMail.zimbra@trevvo. com.br>
Subject: =?utf-8?Q?Informa=C3=A7=C3=A3o_Pendente?=
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
X-Mailer: Zimbra 8.0.4_GA_5737 (ZimbraWebClient - GC27 (Win)/8.0.4_GA_5737)
Thread-Topic: =?utf-8?Q?Informa=C3=A7=C3=A3o?= Pendente
Thread-Index: ENrbVcTdGtx+ermdskfHUJ2p1pevEA==
Thanks in for any future help.

<Sorry for any English mistake>