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SMTP denied

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SMTP denied - 28.Dec.2006 2:16:26 PM   


Posts: 79
Joined: 2.Nov.2006
Status: offline
I also have an Ex FE SMTP server I am trying to publish from ISA 2006 on this same system and I constantly get Access Denied messages when trying to access from a client. I can telnet to port 25 from the ISA server so I know that works.
When the client tries to attach, i get an Access Denied message in the logs showing traffic from internal to Local Host, but it does not say what rule is blocking this.
Also the same with POP3 through same config and same errors.
Anyone seen this before?
Post #: 1
RE: SMTP denied - 1.Jan.2007 11:58:28 AM   


Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi PS,

What is the IP addressing information on the ISA Firewall's interfaces and the SMTP server's interface?



Thomas W Shinder, M.D.

(in reply to paul_psmith)
Post #: 2
RE: SMTP denied - 2.Jan.2007 2:28:14 PM   


Posts: 79
Joined: 2.Nov.2006
Status: offline
ISA server DMZ:
  Addresses in 192.168.56.x range. Listener on a VIP on NLB (through ISA) two node array.

Default gateway specified on this interface.

Route added for internal IP ranges to use internal interface.

No DNS servers are assigened on the DMZ interface as there is no DNS server in the DMZ. It would need to cross the Cisco firewall between the DMZ and the internal network.

Internal Interface:
Addresses in 10.x.x.x range. 10.190.x.x for this site.

Also NLB (through ISA) on this interface.

No defrault gateway assigened.

Internal interface is bound first then DMZ.

DNS servers are assigned to the intrnal interface.

Anything else you need?


(in reply to tshinder)
Post #: 3

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