修改：显示many people are having this problem。
我正在使用Pony电子邮件gem发送短信＆＃39;在Ruby on Rails应用程序中拨打电话号码。它托管在Heroku上。当从Pony发送时，它适用于AT＆amp; T和Verizon，但不适用于T-Mobile。但是，当我从Gmail网络界面发送电子邮件时，短信会传送到T-Mobile号码。
我认为某些电子邮件标头导致T-Mobile拒绝该电子邮件。以下是Gmail发送的电子邮件（隐藏的隐私信息）：
MIME-Version: 1.0
Received: by 55.55.55.55 with HTTP; Mon, 2 Mar 2015 23:51:51 -0800 (PST)
Date: Mon, 2 Mar 2015 23:51:51 -0800
Delivered-To: valid.from.email@gmail.com
Message-ID: <CAN-5ELre3XqXgZQ-6_QGz7C=YXpAoZuTXPODHSmnZ=EOXA0Xwg@mail.gmail.com>
Subject:
From: From Name <valid.from.email@gmail.com>
To: valid.10.digit.phone.number@tmomail.net
Content-Type: text/plain; charset=UTF-8
email content
这是Pony发送的电子邮件。我知道此电子邮件正在发送，因为它显示在Gmail网络界面中的已发送下。
Return-Path: <valid.from.email@gmail.com>
Received: from localhost.localdomain (ec2-55-555-55-555.compute-1.amazonaws.com. [55.555.55.555])
by mx.google.com with ESMTPSA id g29sm577452ioi.35.2015.03.02.23.50.57
for <valid.10.digit.phone.number@tmomail.net>
(version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
Mon, 02 Mar 2015 23:50:57 -0800 (PST)
Date: Tue, 03 Mar 2015 07:50:56 +0000
From: Frome Name <valid.from.email@gmail.com>
To: valid.10.digit.phone.number@tmomail.net
Message-ID: <54f567e08593f_33ff884d99e98497cf@d599820b-b537-4e60-bc52-671c771bf43c.mail>
Mime-Version: 1.0
Content-Type: text/plain;
charset=UTF-8
Content-Transfer-Encoding: 7bit
Delivered-To: valid.from.email@gmail.com
Pony Message content
这是我用来发送电子邮件的代码。
Pony.mail({
:to => 'valid.10.digit.phone.number@tmomail.net',
:body => 'Test Pony',
:headers => { "Delivered-To" => "valid.from.email@gmail.com", 'Content-Type' => 'text/html' },
:subject => 'Subject',
:from => 'From Name <valid.from.email@gmail.com>',
:via => :smtp,
:via_options => {
:address => 'smtp.gmail.com',
:port => '587',
:enable_starttls_auto => true,
:user_name => 'valid.from.email@gmail.com',
:password => ENV['EMAIL_PASSWORD'],
:authentication => :plain, # :plain, :login, :cram_md5, no auth by default
}
})
我怀疑可能导致问题的标题是Received，Content-Type（Pony电子邮件上有换行符）和Content-Transfer-Encoding标题。我无法弄清楚如何更改Pony中的任何值。