[Mimedefang] filter based on From/To headers?
kamal
kamalnee at iitk.ac.in
Wed May 5 15:05:29 EDT 2004
> I need to check for 'invalid' From and To headers in our inbound email
> (primarily to catch spam that inserts 'JUNK at mail_server_hostname' into
> either header.) Does anyone have an example of how they did this or
> pointers on where to wedge it in?
open FH, "<HEADERS" or md_syslog("warning","couldn't open headers file");
my($from);
while(<FH>){
if($_ =~ /^from:/i){
$from=substr($_,5);
last;
}
}
$from contains the from address including name, similarly you can to for
To header
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