Create a Regular Expression for use in catching spam

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Project Budget (USD)
$30 - $250

Project Description:
Write a Regular Expression that will be used in Postini to help filter spam email.
The Regular Expression should match if the domain in the html anchor link ("<a href='") does not match the link text link displayed.
* Case should not matter.
* Both link and text nned to have http[s]://
* <a tag may have either single or double quotes.
* Https and http should be interchangeable.
* either html or display links may have sub domains or parms.

Example Matches (Is Spam): (both have http[s] and the domains do not match) (both have http[s] and the domains do not match)

Exmaple of non matches (passes Spam)
Click here to get screwed (the display link doesn't have a http[s]://) (Domains match)

Additional Project Description:
01/11/2013 at 7:39 NZDT

See attached file since this form removes the html examples

Skills required:
Expression Engine
Additional Files: regex_sampls.txt
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