[Mimedefang] How to resend a quarantined messages later?

[David F. Skoll]

On Thu, 1 Aug 2002, Bryan Evans wrote:

> If the message contained attachments and was quarantined due to the
> file extension, but it is a valid message that we want to resend, can you
> just send the message with a command like this?

> sendmail -f`cat SENDER` `cat RECIPIENTS` < HEADERS \
> PART.1.HEADERS PART.1.BODY PART.2.HEADERS \
> PART.2.BODY  <continuing through attachments>

No, for quite a few reasons:

1) Shell redirection doesn't work like that (you can't supply a list of files)
It would have to be:

	cat HEADERS PART.1.HEADERS ... etc | sendmail -f`cat SENDER` ...

BUT:

2) Even that won't work, because:

   a) Presumably, the quarantined PART's are the ones you DON'T want, and
   b) Concatenating a bunch of headers with binary PART's does not make
      a valid MIME message.

If you want to slice-and-dice quarantined messages and resend them, the
easiest way is to use different rules for messages originating from
localhost.  Something like:

sub filter {
	# blahblahblah
	if ($RelayAddr eq "127.0.0.1") {
		# Slice-and-dice and send message on
	} else {
		# Normal quarantining of suspicious messages
	}
}

This assumes your mail server is a sealed box with no local shell
accounts, and that you take adequate preventative measures on your
firewall to prevent IP address spoofing.

Regards,

David.