http://spam.abuse.net/spam/tools/mailblock.html
http://www.informatik.uni-kiel.de/%7Eca/email/check.html
They're invaluable. I've recently made use of this information to
prevent exactly the problem you've described as at least one of the ISP's
in this area has been brought to its knees by massive mail relaying.
-Scott
>Jake Messinger writes...
>> On Wed, 14 May 1997, Dave Kennedy wrote:
>> > What filter can I set on my PM2E to prevent traffic from gte.net
>> > from my site? Any other suggestions are welcome, also.
>>
>> Since you are using linux to do your sendmail, couldnt you deny smtp
>> services to anyone NOT in your address range or domain(s)?
>
>I'm not a sendmail expert. How would I go about doing that and still
>allow people to send mail to my users?
>
>davek
+-----------------------+--------------------------------+
| Scott Lampert | System Administrator |
| scott@ioa.com | Internet of Asheville |
|(704) 274-1196 Ext 126 | http://www.ioa.com |
+-----------------------+--------------------------------+