RE: [FW1] SMTP relay & Spam mail problem

[calshatti@FW1-NOSPAMgic.com.kw]

I had this problem. Had to upgrade to 3.5 and then add a patch file from
them, because if you are using the disclaimer it will strip the email
message and attachment randomly.

Crystal Al-Shatti
Enterprise Network Security Manager
Gulf Investment Corp, Kuwait
calshatti@gic.com.kw


 -----Original Message-----
From: 	Mohan Sundar [mailto:mohi_v@hotmail.com] 
Sent:	Wednesday, May 23, 2001 11:35 PM
To:	fw-1-mailinglist-digest@beethoven.us.checkpoint.com
Subject:	[FW1] SMTP relay  & Spam mail problem


Hi All,


     I have CheckPoint Firewall-1 ver 4.1 with SP3, Interscan Viruswall ver 
3.4 and MS Exchange server 5.5.
  I have SMTP resource (Viruswall) rule to scan all Inbound SMTP traffic. I 
have few POP3 users who  uses my Exchange server as a relay host. this setup

is working well without any problem.

  But few days back I came to know that somebody is using my Exchange server

as a relay host and generates Spam mails,I tried the following:

1.I enabled authentication for POP3 users in  Exchange server - it
  stopped Spam mail generation, but POP3 users not able to send mails.

2.I enabled " HOSTS AND CLIENTS CONNECTING TO THESE INTERNAL ADDRESS "
  option in Exchange server and specified my Exchange server IP address
  - Now The spam mail got started  but POP3 users able to send &
  receive  mails.

I need to restrict my Exchange server not to be used as relay host except my

autherised users, without disabling SMTP virus scanning.
Would like to hear your valuble suggestions.

Thanx in advance.

Regards,
MOHi

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