Two small jobs on DNS and Mailscanner

As these are quite small jobs, I decided to request a bid for both together: 1) Imagine I would like to have a list of all the Domains which point to a specific DNS Server, say, [login to view URL], or any other. I need a Script, preferably in bash or perl, that could could be called from a command line or the browser (no matter) which could accomplish this. 2) Most of SPAM that pass through my Server refer to Viagra, Cialis, Xanax and Valium, at Subjetct field, obfuscating these words under several different forms, with many different arrangements and combinations of characters, like: wagixVjIjAGRA zisibVijagra and many many else. All I need is a rules file (.cf file) for Spam Assassin which could detect, giving a great pontuation (some around 6.0) for these tons of emails. ## Deliverables To send me the Script tested as well as the Spamassassin rules file with all the necessary instructions to install and run them. ## Platform Server: Pentium-IV, 3.0 Mhz OS: Linux CENTOs Software: Apache, Sendmail, MailScanner, Spamassassin