Best Way to Control Relaying?

[Muhammad Nauman]

Hi

I m using Sendmail 8.13.5
               MailScanner 4.50.15-1
               ClamAV-0.88.2
               Mail-SpamAssassin-3.1.1


and i m relaying my User - using the access featur in sendmail -with file : 
/etc/mail/access

We have quite a lot of users , and some of the residential user are unaware 
that their system is been used for spamming.
Also some of our clients do it on purpose , but they usually use some other 
ID but as they are allowed to Relay - they just ENJOY It .

I want to Bring them Down . Is there any way that - they simply are drop coz 
they are out of my domain !!!

any explained HELP will be greatful.

Thankx in advance

Nauman 


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