大家好，先前有問過gmail寄信至公司信箱，但是卻出現 REJECT:Blacklist. (state 13).的問題。但是我用自己的gmail信箱去試是沒有問題的。(但同一時間，同事寄是會馬上被擋回來)

這個問題常常出現，跟gmail反應也沒回應。
請問大家有什麼解決的方式可以提供參考嗎??

謝謝

郵件原始檔內容:

Delivered-To: sendmail@gmail.com
Received: by 10.42.227.10 with SMTP id iy10cs132551icb;
Wed, 22 Jun 2011 18:33:43 -0700 (PDT)
Received: by 10.42.178.195 with SMTP id bn3mr1267445icb.504.1308792823674;
Wed, 22 Jun 2011 18:33:43 -0700 (PDT)
MIME-Version: 1.0
Return-Path: <>
Received: by 10.42.178.195 with SMTP id bn3mr1524303icb.504; Wed, 22 Jun 2011
18:33:43 -0700 (PDT)
From: Mail Delivery Subsystem <mailer-daemon@googlemail.com>
To: sendmail@gmail.com
X-Failed-Recipients: receipt@aaa.com
Subject: Delivery Status Notification (Failure)
Message-ID: <90e6ba6e864c56f4ea04a65713d2@google.com>
Date: Thu, 23 Jun 2011 01:33:43 +0000
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Delivery to the following recipient failed permanently:

receipt@aaa.com

Technical details of permanent failure:=20
Google tried to deliver your message, but it was rejected by the recipient =
domain. We recommend contacting the other email provider for further inform=
ation about the cause of this error. The error that the other server return=
ed was: 550 550 5.0.0 REJECT:Blacklist. (state 13).

----- Original message -----

MIME-Version: 1.0
Received: by 10.42.178.195 with SMTP id bn3mr1267421icb.504.1308792822546;
Wed, 22 Jun 2011 18:33:42 -0700 (PDT)
Received: by 10.42.227.10 with HTTP; Wed, 22 Jun 2011 18:33:42 -0700 (PDT)
Date: Thu, 23 Jun 2011 09:33:42 +0800
Message-ID: <BANLkTimLKf0HP4okq-ffBHgzjLM6mW88qA@mail.gmail.com>
Subject: test
From: sendmail <sendmail@gmail.com>
To: sendmail@aaa.com
Content-Type: multipart/alternative; boundary=3D90e6ba6e864c45bf8d04a657138=
9