Filter body content

Hi my friends... Thanks for reading....



I have a problem, we are receibing a lot of spam mails trough spoofing and by this the antispam does not detected them... I would like to know, if there is any way to creare a general to apply it ti all my email accoints to filter to discard mails that contents a regexp in their bodies or similar..... Is there any way to do it in amavis or postfix?????

Thank you... Regards...