RE: Exchange Relay

  • From: "John Tolmachoff \(Lists\)" <johnlist@xxxxxxxxxxxxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 27 Nov 2003 07:59:34 -0800

By saying you have the PIX configured very well, does that mean you are
using the SMTP fixup protocol? If so, you are going to have problems.


The firewall should not be doing any kind of SMTP proxy unless is it is app
aware, like ISA is for Exchange. 


You must have your Exchange server locked down for relay settings else some
spammer will find it and use it as an open relay.



John Tolmachoff


eServices For You


-----Original Message-----
From: Kamire, Thomas [mailto:Thomas.Kamire@xxxxxxxxxxxxxxxxx] 
Sent: Thursday, November 27, 2003 4:45 AM
To: [ExchangeList]
Subject: [exchangelist] Exchange Relay

I am having Exchange 5.5 behind a firewall. Is there any problem if I do not
close the relay? The configuration of the PIX 515E Firewall is very well
done. Can someone advise.




Thomas E. Kamire
Systems Engineer
Kenya Airways Ltd,
P.O. BOX 41010 Nairobi, Kenya 
Tel: +254+2+32072311
Cell: +254 722 483 253 
 <mailto:thomas.kamire@xxxxxxxxxxxxxxxxx> thomas.kamire@xxxxxxxxxxxxxxxxx

"Lets Make Things Better - Together"



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