Hi All,
Could someone please help me with these custom anti-spoofing rules I'm
putting in?
I would like to drop all messages from <> not destined for
[EMAIL PROTECTED] and am not sure whether I should do it through
Sendmail or Mimedefang, or if the syntax below is correct.
Also, because this is just an inbound mail gateway, most messages coming
from [EMAIL PROTECTED] are going to be garbage (internal servers handle
all mail from [EMAIL PROTECTED]), so we want to forward those messages to
[EMAIL PROTECTED] for inspection without losing the original
recipient info so that messages can be passed along if found to be
legit.
Is sub filter_sender the best place for both of these items? Here's
what I came up with using the mimedefang-filter man page (keeping in
mind my perl skills are lacking):
##
sub filter_sender {
my ($sender, $recipient, $ip, hostname, $helo) = @_;
if ($sender =~ /^<\>$/) {
if {$recipient =~ /^<[EMAIL PROTECTED]>?$/i) {
return ('CONTINUE', "ok");
}
return ('REJECT', 'We don\'t want your garbage.');
}
# We also want to redirect messages with spoofed sender
@mydomain.com
if ($sender =~ /(^|[EMAIL PROTECTED]/i) {
# Remove original recipients--We don't really want to remove the
# original headers, just tell sendmail to redirect
foreach $recip (@Recipients) {
delete_recipient($recip); }
# Send to spam address
add_recipient('[EMAIL PROTECTED]');
}
}
Thanks for the help,
Joe
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