[Mimedefang] Filter by sender/recipient
David F. Skoll
dfs at roaringpenguin.com
Thu Oct 14 10:05:48 EDT 2004
On Thu, 14 Oct 2004, Jim McCullars wrote:
> sub filter_recipient {
> my ($recipient, $sender, $ip, $hostname, $first, $helo,
> $rcpt_mailer, $rcpt_host, $rcpt_addr) = @_;
> if($recipient =~ /<?postmaster\@/i) {
> return('ACCEPT_AND_NO_MORE_FILTERING', "ok")
> }
> return ('CONTINUE', "ok");
> }
That works perfectly.
But you'd better hope that spammers and virus-writers don't discover
that you're doing it, because then they can inject spam to anyone at all
as long as they include postmaster in the list of recipients.
I would rather do this: In filter_begin, filter, filter_multipart
and filter end:
if ($#Recipients == 0 && $Recipients[0] =~ /<?postmaster\@/i) {
# Skip processing
return;
}
It involves more overhead than Jim's solution (because the message is still
parsed into MIME parts), but is a bit safer.
Regards,
David.
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