How to Block domains in sendmail??
 

I have configured sendmail as my mail server. I am not able to block domains in that. I have two different domains in my organization. I want that both can not communicate through mail with each other. How do I do that??

If you Google for "sendmail block domain", you'll see lots of how tos, including links to this very site, where this question has been asked and answered before. See here:

http://www.linuxquestions.org/questi...domain-676596/
http://www.hansenonline.net/Networki...mail-spam.html
http://www.sendmail.org/support/antispam

Thanks buddy.....these links are really helpful.....