File Attachment size setting questions

[Golden, James]

I am trying to accomplish 2 things.  In upgrading our MTA's (MailScanner, SA, ClamAV), I thought it would be best to block large attachment files here instead of on the mail server (conserve internal bandwidth).  In doing so there are 2 settings I can't figure out via my research.  
  
1.  How can I NOT send the recipient the message at all?  I just want a message going to the sender.  
  
2.  How do I not store that message locally.  Currently we store the mail (temporarily).  
  
Thanks,  
  
James Golden 


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