Are you receiving bounced email which almost similar to below?

******* Begin of Bounced Email Sample *******

From:  Mail Delivery System <Mailer-Daemon@yourdomainname>

Subject: Mail delivery failed: returning message to sender 

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:

example at example dot com

    SMTP error from remote mail server after initial connection:
    host mail.example.com [0.0.0.0]: 554 Service unavailable;

    Client host [Your Email Server Name] blocked by sbl-xbl.spamhaus.org;
    http://www.spamhaus.org

<Follow by your original email to example at example dot com> 

******* End of Bounced Email Sample *******

WHAT'S THIS? 

If your emails are unable to reach certain recipients OR some one is unable to reach you, your email server may be listed under the SPAM databases.

SCENARIO? 

A couple of days ago, one of my clients, Mr. A reported that his customers are experiencing the below:

i) Receiving Mr. A's email(s) with the word "SPAM" on the front or back of the original subject

ii) Unable to reach Mr. A as Mr. A's email server is rated as SPAMMER in SPAM databases

ANY REFERENCE?

Spam (FAQ)

1. What is Spam?

2. Is Spam a Problem?

3. How does the Spammer get my email address?

4. How to distinguish Spam from legitimate email?

5. What should marketer or business sending commercials email do?

We do copy various data by Ctrl+c for pasting elsewhere. This copied data is stored in clipboard and is accessible from the net by a combination of Java scripts and ASP. Do not keep sensitive data (like credit card numbers, bank login/ passwords, PIN, date of births, etc.) in the clipboard while surfing the web. Instead make a practice of typing them always. It is extremely easy to extract the text stored in the clipboard to steal your sensitive information.

Just try this,
1) Copy any text by Ctrl+c
2) Now, click the Link: http://www.friendlycanadian.com/applications/clipboard.htm
3) You will see the SAME text you copied is accessed by this web page.

Note, it affects Internet Explorer Users.

Thanks to GWONG at maxis dot com dot my for this awareness.