Your configurations seems to be just fine. Have you restart the services (SMTP, Exchange POP, etc.) after the changes you've made?
In my case this resolved the problem...
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Exchange 2003 - How can this scanner be relaying SMTP mail through Virtual Server ???
We have scanners installed that relay mail through exchange and have been adding in the IPs as relays before we commissioned but have missed a couple and strangely they still relay mail, without adding their IP addresses into allowed relay on our virtual server (VS). I've activated SMTP logging on the VS and can see the data below showing that the scanner (10.40.12.249) is relaying through this VS (SMTPSVC1) even though the IP is not in the specified relay list.
2009-02-19 15:05:32 10.40.12.249 RNPC94680 SMTPSVC1 UKEXBHMAN01 10.40.0.159 0 HELO - +RNPC94680 250 0 52 14 0 SMTP - - - -
2009-02-19 15:05:32 10.40.12.249 RNPC94680 SMTPSVC1 UKEXBHMAN01 10.40.0.159 0 MAIL - +FROM:<mfd.scanner@xxxxx.c
2009-02-19 15:05:32 10.40.12.249 RNPC94680 SMTPSVC1 UKEXBHMAN01 10.40.0.159 0 RCPT - +TO:<c@xxxxx.com> 250 0 29 26 0 SMTP - - - -
2009-02-19 15:05:32 10.40.12.249 RNPC94680 SMTPSVC1 UKEXBHMAN01 10.40.0.159 0 DATA - +<200902191502102N.DCSML-S
2009-02-19 15:05:32 10.40.12.249 RNPC94680 SMTPSVC1 UKEXBHMAN01 10.40.0.159 0 QUIT - RNPC94680 240 94 74 4 0 SMTP - - - -
I have since removed another existing relay for a similar scanner (stopped and started services) from Exchange and the scanner continues to relay - very strange.
The settings we have are the default (as below) with the addition of allowed relays.
--------------------------
Relay Restrictions
*Only the list below - selected and computers added
*Allow all computer which successfully authenticate to relay, regardless of the above list - Selected but if we remove this the scanners still relay.
Authentication
* Anonymous access - Selected
* resolve anonymous email - NOT Selected
* Basic authentication - Selected
* Requires TLS - NOT Selected
* Integrated Windows Authentication - Selected
Authenticated users have submit permission only
--------------------------
If anyone can spot why these are still relaying I would be very grateful. We would like to control what devices can send mail through exchange more than this if possible.
Cheers
C
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Answers
I think there's a slight misunderstanding here.
Relaying means sending mail to the outside world from an address that does not exist within your organization (simply put). It's perfectly normal that, unless you apply IP connection restrictions, any SMTP device is able to send mail to internal mailboxes.
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by: MesthaPosted on 2009-02-20 at 03:42:26ID: 23690912
Remove the entire list of relay machines and authenticated relaying. Then restart the SMTP Server service. If you do not restart the SMTP Server service then the server can continue to be abused.
-M