opendkim

Пару минут, никуда не уходите=)

Return-Path: <sergey@example.org>

Delivered-To: admin@example.org

Received: from example.org (example.org [10.10.6.1])

by mail.example.org (Postfix) with SMTP id 92607759E

for <admin@example.org>; Sat, 3 Oct 2015 09:53:08 -0400 (EDT)

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=example.org;

s=default; t=1443880406;

bh=URDTPOfrhjZDDaKrLKehDMd2qKvNc7iw3gi93YcvisE=; h=Date:From:To;

b=H4XaUh0NSk7dixYGoPYS/3ODXMboe0Sc12PxPi9qfBqvLNF3G1sQbmzB3qm86lBXf

Q1EHIj2VfazHnn6CY++HF0pLdK0VoEJk+532g/7p0zXeIdDI7XV9IAaVoJauDt6hyF

5UIO8DIdFU+CF87igNJVebGCGFEFsjMnx+uUh0aA=

Message-Id: <20151003135321.92607759E@mail.example.org>

Date: Sat, 3 Oct 2015 09:53:08 -0400 (EDT)

From: sergey@example.org

To: undisclosed-recipients:;

Попробуйте не подписывать поле To.

Прошу прощения, а как это сделать.?

В конфигурационном файле opendkim.conf нужно искать параметры OversignHeaders или SignHeaders. Обычно, поле To указывается в качестве значения второго параметра.

Стоял только From, вот исходник

Return-Path: <sergey@example.org>

Delivered-To: admin@example.org

Received: from [10.10.102.8] (unknown [10.10.102.8])

by mail.example.org (Postfix) with ESMTPA id 9C50E65B3

for <admin@example.org>; Sun, 4 Oct 2015 11:27:56 -0400 (EDT)

DKIM-Filter: OpenDKIM Filter v2.10.3 mail.example.org 9C50E65B3

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mail.example.org;

s=default; t=1443972476;

bh=3t7Ls+9Zep/GhZDdpaGb/wJKF8OzRaS/vh+hgQ6zdTk=;

h=To:From:Subject:Date:To From Subject Date;

b=GnmqhCguQPLBttoc3RYXeDtq9LdEQCMbkkQsZdsLqS80wQPkjMhaosPpHhWlYlkVS

cR7C3oKyWuUdW3KuUe0+IUaTVOd/2EGpJXVsS7GmpFKlFV0qY6lnopmL5bOBZIKM7x

rTYhatEuVaxn3BkP2BovZ6z/Au1nUeIlDDl35/Bs=

To: admin@example.org

From: sergey <sergey@example.org>

Subject: w

Message-ID: <56114596.4070008@example.org>

Date: Sun, 4 Oct 2015 18:28:22 +0300

User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101

Thunderbird/38.2.0

MIME-Version: 1.0

Content-Type: text/plain; charset=utf-8; format=flowed

Content-Transfer-Encoding: 7bit

хмм, может postfix режит содержимое тела письма, он такое можит, покажи конфиг постфикса.

broken_sasl_auth_clients = yes

command_directory = /usr/sbin

config_directory = /etc/postfix

daemon_directory = /usr/libexec/postfix

data_directory = /var/lib/postfix

debug_peer_level = 2

home_mailbox = /var/vmail/

html_directory = no

inet_interfaces = $mydomain

inet_protocols = ipv4

local_recipient_maps = $virtual_mailbox_maps, $virtual_alias_maps, $virtual_mailbox_domains

mail_owner = postfix

mail_spool_directory = /var/mail

mailq_path = /usr/bin/mailq.postfix

manpage_directory = /usr/share/man

milter_default_action = accept

milter_protocol = 2

mydomain = example.org

myhostname = mail.example.org

mynetworks = 10.10.0.0/16 127.0.0.0/8

myorigin = $mydomain

newaliases_path = /usr/bin/newaliases.postfix

non_smtpd_milters = $smtpd_milters

queue_directory = /var/spool/postfix

readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES

relay_domains = $mydestination

sample_directory = /usr/share/doc/postfix-2.6.6/samples

sendmail_path = /usr/sbin/sendmail.postfix

setgid_group = postdrop

smtpd_milters = inet:127.0.0.1:8891

smtpd_sasl_auth_enable = yes

smtpd_sasl_path = /var/spool/postfix/private/auth

smtpd_sasl_security_options = noanonymous

smtpd_sasl_type = dovecot

unknown_local_recipient_reject_code = 550

virtual_alias_maps = mysql:/etc/postfix/valiase.cf

virtual_gid_maps = static:12

virtual_mailbox_base = /var/vmail

virtual_mailbox_domains = mysql:/etc/postfix/vdomains.cf

virtual_mailbox_maps = mysql:/etc/postfix/vmailbox.cf

virtual_minimum_uid = 900

virtual_transport = dovecot

virtual_uid_maps = static:1000

Вот ещё лог отправки письмаЖ