RE: Postfix -> ISA -> Exchange
- From: "Jason Ballard" <jasonb54@xxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 7 Feb 2002 22:14:53 -0500
As Joseph mentioned, ISA Service Pack 1 was recalled because the SMTP
filter was causing problems like you mentioned below. SP1 is being
fixed right now by MS and should be back on the Web site available for
download very soon.
Jason
-----Original Message-----
From: Jon Booth [mailto:jon@xxxxxxxxxxxxxx]
Sent: Thursday, February 07, 2002 6:42 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Postfix -> ISA -> Exchange
http://www.ISAserver.org
Sorry to be still on this subject. I don't understand how others aren't
suffering the same problem. I have only seen one other, and there are a
lot of PostFix boxes out there.
Problem: Postfix sends to Exchange Server that is behind ISA with
default
SMTP Application filter enabled.
ISA Server rejects the connection with a 500 5.3.3 Unrecognized command
response.
I have installed Postfix server here and had a play. From Netmon I have
seen that Postfix sends MAIL FROM: RCPT TO: and DATA: commands all in
one
go, unlike other servers I have looked at, which send one at a time.
I have tried extending the allowed lengths of commands in the filter but
it is no good. The only resolution was to disable the filter and now it
works.
Is anyone else out there running a mail server behind ISA with SMTP
Application filter enabled? I can test sending a message from our
postfix
server and see if you get it. It would be appreciated.
Thanks
Jon
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