[SLE] Sendmail rules

Hello, I'd like to know how can I do that if a mail arrive to my server with a determinate subjet this mail was eliminate and don't arrive to the user. Thank you -- To unsubscribe send e-mail to suse-linux-e-unsubscribe@suse.com For additional commands send e-mail to suse-linux-e-help@suse.com Also check the FAQ at http://www.suse.com/Support/Doku/FAQ/