One of two things is true:

1.  Your email server is misconfigured.  Any blacklist service worth 
worrying about will gladly point you to resources which explain how 
to correct this.  The issue is at the mail server level, and it is 
really not appropriate to try to fix this with a packet-filter 
firewall.

2.  You are running email software for which no fix is available.  
Upgrade to something recent/real-world, and see item 1.

David Gillett


On 23 Oct 2001, at 16:26, Timothy K. Cornelius wrote:

> At this time our internet mailserver(behind the FW-1) has been
> designated as an open relay mailserver and has been blacklisted by
> several spam blocker websites( www.orbz.org is one of them) after
> reading up on how to stop this at the firewall I added two rules on
> the firewall with services w/resources. the
> resource(SMTP->our-mail-only-in) is SMTP and the match is coming
> in the sender is * and the recipient is *loi.org. The other is
> going out, the resource(SMTP->our-mail-only-out) is SMTP and the
> match is sender is *loi.org and the recipient is *  I have also
> created a rule below these two that denies and mail service plus 2
> services with resources (SMTP->openrelay-in and
> SMTP->openrelay-out) these are the same as the first two. Is this
> not the correct way to handle stopping an open relay mailserver or
> is there a better way? 
>  
> PLEASE HELP ME ASAP!!!!!!!!!!!!!!! our  mail services are just about
> non-existent, except my Firewall email groups.
>  
> 1 Source: any    Dest.: mailserver     Service: SMTP->our-mail-only-in
> Action: accept
> 2 Source:mailserver    Dest: any     Service:SMTP->our-mail-only-out
> Action: accept
>  
> Thanks in advance,
>  
> Tim

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