Sendmail不伪装电子邮件“接收：”邮件标题

Question

我按照NixCraft站点的说明，尝试用以下配置伪装我的电子邮件：

MASQUERADE_AS(example.com)dnl
FEATURE(masquerade_envelope)dnl
FEATURE(masquerade_entire_domain)dnl
MASQUERADE_DOMAIN(example.com)dnl

并补充如下：

MASQUERADE_DOMAIN(localhost)dnl
MASQUERADE_DOMAIN(localhost6.localdomain6)dnl
MASQUERADE_DOMAIN(mail.server)dnl

我做了个测试

$ echo "Subject: test
From: no-reply@example.com
test" | sendmail -v -fuser@example.com -O NoRecipientAction=add-to check-auth@verifier.port25.com

这就是我在标题中收到的信息：

Return-Path: <user@example.com>
Received: from mail.server (my.ip.add.ress) by verifier.port25.com id abcd1234 for <check-auth@verifier.port25.com>; Sun, 29 Jun 2014 01:23:45 -0400 (envelope-from <user@example.com>)
.....
Received: from mail.server (localhost6.localdomain6 [127.0.0.1])
    by mail.server (8.14.8/8.14.8) with ESMTP id s5T5XgSa003053
    (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO)
    for <check-auth@verifier.port25.com>; Sun, 29 Jun 2014 12:34:56 +0800
Received: (from root@localhost)
    by mail.server (8.14.8/8.14.8/Submit) id s5T5XfHR003052
    for check-auth@verifier.port25.com; Sun, 29 Jun 2014 12:34:56 +0800

可以看到，mail.server、localhost和localhost6.localdomain6仍然显示在接收到的行中。为了让Sendmail伪装成正常工作，我还应该做些什么呢？

Answer 1

您可以更改定义confDOMAIN_NAME的“此主机电子邮件名称”(用于接收到的标头)。

https://www.sendmail.org/~ca/email/doc8.12/cf/m4/whoami.html

默认情况下，sendmail的伪装更改仅限于报头发件人(例如From:标头)。它可以配置为更改信封发送方( SMTP会话中的MAIL FROM:)和/或标头收件人(例如，To:和Cc:标头)。AFAIK它不会在任何情况下改变Received:头。

https://www.sendmail.org/~ca/email/doc8.12/cf/m4/masquerading_relaying.html