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Why does email go to spam sometimes?

What is wrong with this email headers? It always go to gmail and yahoo spam box

  • Delivered-To: [email protected] Received: by 10.229.249.207 with SMTP id ml15cs152516qcb; Tue, 9 Aug 2011 05:22:45 -0700 (PDT) Received: by 10.151.142.17 with SMTP id u17mr6831320ybn.198.1312892565452; Tue, 09 Aug 2011 05:22:45 -0700 (PDT) Return-Path: <xxxxx@xxxxxxxxx> Received: from mail.mydomain.com.br (mail.mydomain.com.br [xx.xx.xxx.xx]) by mx.google.com with ESMTP id g4si5211294ybi.22.2011.08.09.05.22.44; Tue, 09 Aug 2011 05:22:44 -0700 (PDT) Received-SPF: pass (google.com: domain of xxxxx@xxxxxxxxx designates xx.xx.xxx.xx as permitted sender) client-ip=x.xx.xxx.xx; Authentication-Results: mx.google.com; spf=pass (google.com: domain of xxxxx@xxxxxxxxx designates x.xx.xxx.xx as permitted sender) smtp.mail=xxxxx@xxxxxxxxx; dkim=pass [email protected] Received: from mydomain.com.br (xxxxxxxxxxxxxxx.xxxxxxxxxxxxxxx [x.xx.xxx.xx]) by mail.mydomain.com.br (Postfix) with ESMTPA id 02C12B543AE for <[email protected]>; Tue, 9 Aug 2011 09:22:42 -0300 (BRT) DomainKey-Signature: a=rsa-sha1; s=mail; d=mydomain.com.br; c=simple; q=dns; b=K7lPw72zqmctULDiEdOjdgQWpmClkICAjdKo07hkSicyQU7nRjFAQXR9hf270t0aq wD5XjP35FRY3a52kNsVo1OAI22ttiKEDUC/N9e0/57cnoTXFVvzumYBSylgKyk3mPbu H0cEJtAVlutfgCES8x1Gdjigd/ek11WQabWWjnk= DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mydomain.com.br; s=mailk; t=1312892562; bh=1lADbHhk2GRaz/mXB4uRhcq7+ei8fg20sFxDsiIDW4A=; h=Date:To:From:Reply-to:Subject:Message-ID:MIME-Version: Content-Type; b=NN2JnPJJZfWnAjYU8x1dC5Cwz3WbkwPAx1yU0w9Xbz55Aa2KpbpIYnTiRmbKg7L0O 7aP0EgAoqCMRwni6S6HqLw3MjR2I3B3qVmkMkyKMHjZ6N2sivovrTq/R0P9A4X+8G9 GLim31Yo/ZTLl3cEyOrWCvokAVJYMSm/uS8aTpaY= Date: Tue, 9 Aug 2011 09:22:42 -0300 To: xxxxx@xxxxxxxxx From: xxxxx <xxxxx@xxxxxxxxx> Reply-to: xxxxx <xxxxx@xxxxxxxxx> Subject: =?iso-8859-1?Q?Reuni=E3o_de_professores_na_escola?= Message-ID: <b8b16385ed9c0141365ee6257a39d284@xxxxx> X-Priority: 3 X-Mailer: PHPMailer 5.2 (http://code.google.com/a/apache-extras.org/p/phpmailer/) MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="b1_b8b16385ed9c0141365ee6257a39d284" --b1_b8b16385ed9c0141365ee6257a39d284 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Teremos reunião na escola a noite, favor comparecer. obrigado. --b1_b8b16385ed9c0141365ee6257a39d284 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: 8bit <html> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td> <table align="center" border="0" cellpadding="0" cellspacing="0" width="550"> <tr> <td bgcolor="#052444"> <table align="center" border="0" cellpadding="0" cellspacing="0" width="510"> <tr> <td> <font color="#FFFFFF" face="Arial" size="2"><b><a href="xxxxxxxxx" target="_blank" style="color:#FFFFFF; text-decoration:none;">Teremos reunião na escola a noite, favor comparecer. obrigado.</a></b></font> </td> </tr> </table> </td> </tr> </table> </td> </tr> </table> </body> </html> --b1_b8b16385ed9c0141365ee6257a39d284-- Mail always to Gmail and Yahoo always go to spam. The server is dedicated and it's not blacklisted. Perhaps it could be some postfix config?

  • Answer:

    It's almost certainly the fact that the body of the e-mail is very short, and the subject is gobbledygook to a English based spam filter. Subject: =?iso-8859-1?Q?Reuni=E3o_de_professores_na_escola?=

ubunpstfix at Server Fault Visit the source

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