Estou tentando impedir o spam de um remetente. Eles sempre usam outro servidor de email. aqui estão os cabeçalhos do e-mail original (substituí meu e-mail e host por: [email protected], e-mail e host do remetente i substituído por: [email protected], todos os outros permanecem inalterados):
From - Mon Jan 27 14:17:08 2014
X-Account-Key: account7
X-UIDL: 1201266183.11294
X-Mozilla-Status: 0001
X-Mozilla-Status2: 00000000
X-Mozilla-Keys:
Return-Path: <[email protected]>
Received: from my-domain.com ([unix socket])
by localhost (Cyrus v2.2.13-Debian-2.2.13-10) with LMTPA;
Mon, 27 Jan 2014 14:15:18 +0200
X-Sieve: CMU Sieve 2.2
X-Greylist: delayed 460 seconds by postgrey-1.27 at mnl-bck; Mon, 27 Jan 2014 14:15:05 EET
Received: from gw13.delivery-gate.com (gw13.delivery-gate.com [72.29.83.9])
by my-domain.com (ESMTP daemon) with ESMTP id 999EA15F505
for <[email protected]>; Mon, 27 Jan 2014 14:15:05 +0200 (EET)
MIME-Version: 1.0
From: Blah blah blah <[email protected]>
To: [email protected]
X-Original-To: [email protected]
Reply-To: Blah blah blah <[email protected]>
Subject: {(***Disarmed***)} =?UTF-8?B?VmFsZW50xKtuYSBkaWVuYSBuxIFrIQ==?=
Date: Mon, 27 Jan 2014 12:07:07 +0000
DKIM-Signature: v=1; a=rsa-sha1; q=dns/txt; l=6092; s=default;
t=1390824427; c=relaxed/simple;
h=From:To:Subject;
d=delivery-gate.com;
z=From:=20Blah blah blah=20<[email protected]>
|To:[email protected]
|Subject:=20=3D?UTF-8?B?VmFsZW50xKtuYSBkaWVuYSBuxIFrIQ=3D=3D?=3D;
bh=fOfN6GO2cjh0ZljdK73x8C71zUg=;
b=BGlxwArEBjFsawRUIO7e9DyOBaUvFs0xgUCPKVkOXVoF0ND5BKxQzCuDqpV3ek1kOGo/gn0UaCH0j405y/XXEfhTE83NN6C/V7zY2pcxf6iBeMAxxqy93CNL1UsAjRLhZOBhg2m1c47WPpHzZdn9dOxXM190YD6x+xqHo8Ydu+c=
Content-Type: multipart/alternative;
boundary="=_6ec15ca19a7f51e90ef52ebaa3d3dfc1"
Message-Id: <[email protected]>
X-my-domain.com-MailScanner: Found to be clean
X-my-domain.com-MailScanner-SpamScore: 2.77
X-my-domain.com-MailScanner-From: [email protected]
X-MailScanner-Envelope-To: [email protected]
--=_6ec15ca19a7f51e90ef52ebaa3d3dfc1
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset="UTF-8"
Eu editei /etc/postfix/sender_access para rejeitar o email de sender-website.com . Mas isso não funciona, porque o postfix está vendo que o email vem de outro remetente / servidor. Do arquivo de log do postfix:
Jan 27 14:15:05 myMailServer postfix/smtpd[12822]: connect from gw13.delivery-gate.com[72.29.83.9]
Jan 27 14:15:05 myMailServer postgrey[4304]: delayed 460 seconds: client=gw13.delivery-gate.com, from=4a590193769-#-#@delivery-gate.com, [email protected]
Jan 27 14:15:05 myMailServer postfix/policy-spf[12827]: : testing: stripped [email protected], stripped [email protected]
Jan 27 14:15:05 myMailServer postfix/policy-spf[12827]: : SPF pass: smtp_comment=Please see http://www.openspf.org/why.html?sender=4a590193769-1-589%40delivery-gate.com&ip=72.29.83.9&receiver=myMailServer: 72.29.83.0/24 contains 72.29.83.9, header_comment=myMailServer: domain of [email protected] 72.29.83.9 as permitted sender
Jan 27 14:15:05 myMailServer postfix/policy-spf[12827]: decided action=DUNNO
Jan 27 14:15:05 myMailServer postfix/smtpd[12822]: 999EA15F505: client=gw13.delivery-gate.com[72.29.83.9]
Jan 27 14:15:05 myMailServer postfix/cleanup[12829]: 999EA15F505: hold: header Received: from gw13.delivery-gate.com (gw13.delivery-gate.com [72.29.83.9])??by my-domain.com (ESMTP daemon) with ESMTP id 999EA15F505??for <[email protected]>; Mon, 27 Jan 2014 14:15:05 +0200 (EET) from gw13.delivery-gate.com[72.29.83.9]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<gw13.delivery-gate.com>
Jan 27 14:15:05 myMailServer postfix/cleanup[12829]: 999EA15F505: message-id=<[email protected]>
Jan 27 14:15:05 myMailServer postfix/smtpd[12822]: disconnect from gw13.delivery-gate.com[72.29.83.9]
Então, quando eu estou procurando fonte de mensagem no thunderbird, eu vejo o cabeçalho: From: Blah blah blah <[email protected]> . Como posso bloquear o email desse remetente (remetente-site.com)? Não faz sentido bloquear o IP, porque da próxima vez será diferente. Eu também configurei o MailScanner, mas isso também não mostra o cabeçalho from adequado. Eu já coloquei na blacklist esse domínio no MailScanner também.
Então, você adicionou [email protected] REJECT ao seu arquivo sender_access . Você adicionou hash:/etc/postfix/sender_access ao seu smtpd_recipient_restrictions = como a primeira opção?
Você também pode ter mais sorte ao usar a opção smtp_nested_header_checks , pois permite examinar qualquer cabeçalho Não-MIME para identificadores.
Tags postfix mailscanner