This may or may not help but what if you:
Enable Refuse Null <> Senders
Create a global rule that checks if the subject line contains "Undeliverable
Mail"
send to the mailbox name "undeliverable_mail" or any other name (without
quotes of course)
Disable Match Case
I'm assuming that the spam you're trying to block all have a Null sender.
If you have Relay Mail for anyone enabled, you may always be open to spam.
----- Original Message -----
From: "Dusty" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, May 25, 2000 12:00 PM
Subject: Re: [IMail Forum] disadvantages of no nul sender?
> I have battled with this type of problem for a while now.
> I worked the global rules.ima file to death as well as the
> kill.lst. All of those do help somewhat. I also use Control
> Access in SMTP Security. Again, this helps some.
> Unfortunately I was forced to start implementing even more
> secure measure and most recently this involved setting up
> IMGate and utilizing MAPS. I also have started implementing
> router blocks to keep some of the real trouble servers out.
>
> Dusty
>
> ----- Original Message -----
> From: Dooz L Owings <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, May 25, 2000 10:01 AM
> Subject: Re: [IMail Forum] disadvantages of no nul sender?
>
>
> > Dusty,
> >
> > This is the kind of thing I am looking for. I am running an Imail
> server and my kill list is a mile long with many over seas domains. Even
> with the kill list and allow control, if I uncheck the null sender the
spam
> floods my T1. What are some other options? I have heard of a blacklist and
> thought that might help but I cant find it. Any help would be nice. Also I
> get a lot of spam from places like yahoo, and excite. I am a nation wide
ISP
> I have thousands of users is there a good filter setting for these
domains?
> >
> > Dooz Owings
>
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
