blocking a specific Email address

 The exact manner in which you do this, will depend on the email software you use.
  What you will want to do is look for filters.  If you are using elm, for example, consult its manuals on the 'filter' program.
  You can then create rules in a filter file, such as

  if (from = "x@x.com") then delete

so that elm automatically removes mail from a specific user.

  If you are using a different mail reader, it will most likely support such a feature - take a look in the accompanying help or manuals for it.

I'm using the Sendmail software on Linux..
How can I find these filters..

Thank you davidmwilliams.

filtering and deleting mail from a specific user as suggestted doesn't block that user from sending mail though, at least not at the machine level.. thus you're not really answering the question..

to block mail from a specific user at the machine level, you either need to install a firewall in front of that machine, and block the mail at the firewall, or resort to using SENDMAIL version 8.8.. it's got the ability to filter directly at the mail service level, without having to bring mail into your application and filtering it there...


see url    http://www.sendmail.org/antispam.html  for details... it should run on your LINUX system..


reject the current proposed response, and I'll repost as an answer..


good luck

waiting for tfabian or others answers

some of the response got cut off when I cut and pasted it..  

sorry.. it's all in my previous comment though..