我正在使用HelpScout并通过SendGrid发送（以便跟踪打开，退回等）。我有问题，因为eBay向我们的客户支持HelpScout应用程序发送成员消息，拒绝我们的回复，其中包含以下消息：
bounces+544081-5160-me=example.org@sendgrid.info
is not a registered email address...
add to whitelist etc..
以下是通过SendGrid发送的HelpScout回复中的一些标头。如您所见，它到处都有bounces...个电子邮件地址。
Delivered-To: me@example.org
Return-Path: <bounces+544081-5160-me=example.org@sendgrid.info>
Received: from o1638913x156.outbound-mail.sendgrid.net (o1638913x156.outbound-mail.sendgrid.net. [163.89.13.156])
by mx.google.com with ESMTPS id ly8si1461978wjb.40.2015.05.19.16.22.21
for <me@example.org>
(version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
Tue, 19 May 2015 16:22:22 -0700 (PDT)
Received-SPF: pass (google.com: domain of bounces+544081-5160-me=example.org@sendgrid.info designates 163.89.13.156 as permitted sender) client-ip=163.89.13.156;
Authentication-Results: mx.google.com;
spf=pass (google.com: domain of bounces+544081-5160-me=example.org@sendgrid.info designates 163.89.13.156 as permitted sender) smtp.mail=bounces+544081-5160-me=example.org@sendgrid.info;
dkim=pass header.i=@sendgrid.me
Received: by filter0448p1mdw1.sendgrid.net with SMTP id filter0448p1mdw1.14711.555BC5AB1
2015-05-19 23:22:20.183545946 +0000 UTC
Received: from secure.helpscout.net (unknown [10.100.60.108])
by ismtpd-019 (SG) with ESMTP id 14d6e7c27b3.1336.1b3f18
for <me@example.org>; Tue, 19 May 2015 23:22:19 +0000 (UTC)
From: Customer Support <help@oursite.com>
To: me@example.org
Subject: Fwd: Your message to ebayuser123 was blocked, because it wasn't sent from your registered email address.
Message-Id: <reply-8673-92216597-234152896-1432077739-1043083945@helpscout.net>
为什么SendGrid会创建这个地址并且有办法防止它 - 我需要一个不会改变的地址，以便我可以列入白名单。