Zapped by 88.blacklist.zap!!

I haven’t got a clue about this blacklisting service, but it sure caused a lot of inconveniences to corporate email holders. For the last week, I received a lot of calls telling me that my email recipient did not receive my email (which I have sent a few days earlier).

Then I traced back some of the Sent Mails and a few email with the subject “Mail delivery failed: returning message to sender” and read it. Ahhh.. here is the problem!

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
SMTP error from remote mail server after RCPT TO:<>:
host []:
550 Service unavailable; Client host [] blocked using 88.blacklist.zap; Mail From IP Banned To request removal from this list please forward this message to

—— This is a copy of the message, including all the headers. ——

Return-path: <>
Received: from [] (helo=epmobile)
by with esmtpa (Exim 4.66)
(envelope-from <>)
id 1IJNm5-00048s-54
for; Fri, 10 Aug 2007 06:15:06 +0000
From: “James Guang” <>
To: “Nancy Embal” <>
Subject: Psst
Date: Fri, 10 Aug 2007 14:14:54 +0800
MIME-Version: 1.0
Content-Type: multipart/alternative;
X-Priority: 1 (Highest)
X-MSMail-Priority: High
X-Mailer: Microsoft Office Outlook 12.0
Importance: High
Thread-Index: AcfbFcSkA18n/BTnQeWVrDNvZRbnzw==
Content-Language: en-us
Disposition-Notification-To: “James Guang” <>

This is a multipart message in MIME format.

Content-Type: text/plain;
Content-Transfer-Encoding: 7bit

Namo berita?

I traced and ended up at Microsoft Exchange Hosted Services and a search at Google only gave me 424 results! With little choice I have emailed to get the IP off the list.

Within seconds, I received an email from as below:


Thank you for your submission to Microsoft Exchange Hosted Services Technical Support. This automatically generated message confirms that we have opened ticket number 070809-000652 with the description:

FW: Mail delivery failed: returning message to sender

Please include the string “[Incident:070809-000652]” in the subject line of all future e-mail messages regarding this issue to avoid
the creation of duplicate tickets – replying to this message is the easiest way to do so. You can check the status of your ticket, and submit additional information, by visiting our support web site at: bla

If this is a delisting request your IP will be forwarded to the correct resource for investigation and we will contact you only if additional information is needed. For all other issues an agent will typically respond to most requests within 4 hours. You may also find it useful to review the following information that has been gathered from our Knowledge Base by searching for words found in your e-mail:

Some recipients are not receiving some email
Legitimate Mail Trapped as Spam
Domain Not Receiving Mail
Custom Spam Filter Management options
Troubleshooting spam issues

Thank you,
Technical Support
Microsoft Exchange Hosted Services

I will keep you guys inform of the status later. Or, if anyone out there having the same problem, please share with us on how you have resolve it.

Cheers and have a wonderful weekend :D

3 thoughts on “Zapped by 88.blacklist.zap!!”

  1. I have the same problem with, my sent emails not arrives.

    This problem was reported to but they inform that the ip for is ok, but I think that is afirmation is a lie.

  2. Hello,

    i think today internet becomes a huge lie by big company as Microsoft, AOL, YAHOO etc… their stypid spam blacklist avoid little companies to use their own machines to be free to work all around the world. it started to be a big anti-freedom mind to block emails from millions people… i’m very sad today

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