Emails go to spam folder in gmail

[rabichawila]

Thanks to all contributors of this repository, really appreciate great effort you put in this project.

Now i have Installed my Mail server by following this guide: linuxbabe. , i've installed everything as suggested.

But i have a problem though.
Every time i send my emails to gmail they go to spam folder.

I tried to search online but i cannot see any clear way of fixing the problem.

[ EDIT ]

I have also heard people saying the problem is related to localhost [127.0.0.1] in the mail header, and they suggest that the problem can be fixed by removing it ( Even though they do not tell how)

And some are against removing localhost [127.0.0.1] in mail header

[ EDIT 2 ]

Mail header:

Message ID	<0eab655da201cf5cc2cc638ce88546c0@EXAMPLE.COM>
Created at:	Thu, Mar 26, 2020 at 11:39 AM (Delivered after 44 seconds)
From:	chawila rabi <chawila@EXAMPLE.COM>
To:	chawila@gmail.com
Subject:	chawila
SPF:	PASS with IP MY-IP-ADDRESS Learn more
DKIM:	'PASS' with domain EXAMPLE.COM Learn more
DMARC:	'PASS' Learn more

Delivered-To: chawila@gmail.com
Received: by 2002:a50:c048:0:0:0:0:0 with SMTP id u8csp1705124edd;
        Thu, 26 Mar 2020 02:40:21 -0700 (PDT)
X-Google-Smtp-Source: ADFU+vv+BznGXYytLoijEGsdq5W4+Run9RcLOy7RybWle5h8Pu6UUekokGby04FOpRCW7/g+Vbww
X-Received: by 2002:ac8:38eb:: with SMTP id g40mr6788062qtc.98.1585215621202;
        Thu, 26 Mar 2020 02:40:21 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1585215621; cv=none;
        d=google.com; s=arc-20160816;
        b=DNY0c3R5994pxMpueQHWhcN2WPbY7a+PaUrza3I5LvVt5kowXNKxCBhwqWc404mWtv
         ydzli5EqOdwUX2RWFpfgkSuVzOCwdj2CNNNHYICsb0+EEH3pJPr2XsBM5Cxe7YQhqmlU
         Kpp6ayUTWCnOTp/CfMIfwSoihjjKJA7ePb898RDMkkXH9nI9OyY7YNqxy9pffatf+MiM
         iJ5xiW80U2CNfbU+AUn54xcPyDIA/mF4GsikU7EKnyvcr9o8zWbBeG9cD5QFpu22z707
         WNki3UfutFSxsS3JAXRydl7k+jpsJloSh90RsW0nabTdF6npk05IRQ5Quy8VxKKL1jSV
         yJBg==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=organization:message-id:user-agent:subject:to:from:date
         :mime-version:dkim-signature;
        bh=Mh2Xz0f85PtVRMU0mEZwchI365UMckbn7RlTXBEfCMw=;
        b=JHXQqFCCiWt7jAm7vlA8UhVfrVDc9opNDfj1/zxs0e/loGydYeJMETXnHXP9q/6JSy
         FPxT4v7/C3gqnYMzjTffIfMX/TVGCoQiUarLjHEQUJkNIKMf3JIDatwN8uZI5Plb3BA3
         MnUz/eUHnBC3wy2r6lwOzwwtYzAgwSpJqzBAfDW2Z8IVAHyHIv+su9grs1sY5YsQrNtP
         mIt1VhS/1g3HuWu3wnrrBquO9zWe3TP/BF4GQHoln5bFbCydXzhwakihCncAds2M0o0F
         dJv2tDWTu7PHHzpYkP74oZLwTgiKUoL4vXY9oz7UQZFXFL3MVB/q784BAAn7deD588Ks
         MwLQ==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@EXAMPLE.COM header.s=dkim header.b=JrJ75wMs;
       spf=pass (google.com: domain of chawila@EXAMPLE.COM designates MY-IP-ADDRESS-HERE as permitted sender) smtp.mailfrom=chawila@EXAMPLE.COM;
       dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=EXAMPLE.COM
Return-Path: <chawila@EXAMPLE.COM>
Received: from mail.EXAMPLE.COM (mail.EXAMPLE.COM. [MY-IP-ADDRESS-HERE])
        by mx.google.com with ESMTPS id d17si840171qtj.176.2020.03.26.02.40.20
        for <chawila@gmail.com>
        (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);
        Thu, 26 Mar 2020 02:40:21 -0700 (PDT)
Received-SPF: pass (google.com: domain of chawila@EXAMPLE.COM designates MY-IP-ADDRESS-HERE as permitted sender) client-ip=MY-IP-ADDRESS-HERE;
Authentication-Results: mx.google.com;
       dkim=pass header.i=@EXAMPLE.COM header.s=dkim header.b=JrJ75wMs;
       spf=pass (google.com: domain of chawila@EXAMPLE.COM designates MY-IP-ADDRESS-HERE as permitted sender) smtp.mailfrom=chawila@EXAMPLE.COM;
       dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=EXAMPLE.COM
Received: from mail.EXAMPLE.COM (mail.EXAMPLE.COM [127.0.0.1]) by mail.EXAMPLE.COM (Postfix) with ESMTP id 48p0MB4fMMz5tGV for <chawila@gmail.com>; Thu, 26 Mar 2020 09:39:50 +0000 (UTC)
Authentication-Results: mail.EXAMPLE.COM (amavisd-new); dkim=pass (1024-bit key) reason="pass (just generated, assumed good)" header.d=EXAMPLE.COM
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d= EXAMPLE.COM; h=content-type:organization:message-id :user-agent:subject:to:from:date:mime-version; s=dkim; t= 1585215577; x=1587807578; bh=I0N0s3nLspBejS4QlWMImSU6LZisdTsa2uC TW2kCClw=; b=JrJ75wMsfEr5SufnqE7wb892rYlUCC6egaUkcDOHyWikCNo1tGl KPh3GOcMuIvNbIczS+y8RznmSaKu3QhB02jxdgHqJpl4MGoensGShy7t0eApeoE7 vHXHJBinBpGO64HvFptokxULacb8emBZvyvpn+eXCNvUF66TzPClKui8=
X-Virus-Scanned: Debian amavisd-new at mail.EXAMPLE.COM
Received: from mail.EXAMPLE.COM ([127.0.0.1]) by mail.EXAMPLE.COM (mail.EXAMPLE.COM [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id HhIO7_uvqxFy for <chawila@gmail.com>; Thu, 26 Mar 2020 09:39:37 +0000 (UTC)
Received: from localhost (mail.EXAMPLE.COM [127.0.0.1]) by mail.EXAMPLE.COM (Postfix) with ESMTPSA id 48p0Lx1hDpz5tGT for <chawila@gmail.com>; Thu, 26 Mar 2020 09:39:37 +0000 (UTC)
MIME-Version: 1.0
Date: Thu, 26 Mar 2020 11:39:37 +0200
From: Oarabile Chawilani <chawila@EXAMPLE.COM>
To: chawila@gmail.com
Subject: chawila
User-Agent: Roundcube Webmail
Message-ID: <0eab655da201cf5cc2cc638ce88546c0@EXAMPLE.COM>
X-Sender: chawila@EXAMPLE.COM
Organization: Amplified Crafts
Content-Type: multipart/mixed; boundary="=_00037a52c7447a75f844dac708875dff"

--=_00037a52c7447a75f844dac708875dff
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=US-ASCII; format=flowed

So the question i'll like to ask is: How do we fix this problem?

[TitanFighter]

What is your score: https://www.mail-tester.com/ ? Also in the report you may found info about possible problems due to which your emails may go to spam.

[rabichawila]

I am not sending bulk/mass emails though..

[TitanFighter]

I had the same issue about 5 years ago when I bought a new domain. At that time I found info that I simply need to wait a bit and google then will recognize mails from my domain as ok, and indeed within 2-4 weeks this problem was solved automatically. Have you sent any emails from your domain before or is it a brand new domain?

[rabichawila]

I only sent less than 5 email then they went to spam, so i stop and reinstalled the mail server with iredmail.

The domain is old, it got couple of months..
even yahoo is blocking them, they are not been delivered..

[ Edit ]
My server droplet was created yesterday, and my ip is not blacklisted anywhere

[TitanFighter]

As I understand, Google does not check when your domain was created, but what they do check is when your domain appeared in their system at the first time.