[ExchangeList] SMTP - Blocking messages where the the recipient does not exist in the GAL.

  • From: "Crockett, Gregory" <Gregory.Crockett@xxxxxxxxx>
  • To: <exchangelist@xxxxxxxxxxxxx>
  • Date: Sat, 17 Jun 2006 12:25:50 -0500

Is there anyway to accomplish the above at the firewall - we are using
ISA?  We are receiving ton of messages with anything left of the @.

 

Some of the recipients:

jkyxpzbjzqkli@xxxxxxxxx

lggxxtpghdx@xxxxxxxxx

jxbhwutklun@xxxxxxxxx

 

 

Is there a way to extend Recipient Filtering to the firewall?

 

TIA

 

greg

 


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