RE: Postfix -> ISA -> Exchange
- From: Jon Booth <jon@xxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 8 Feb 2002 13:30:05 +1100 (EST)
Thanks Jason and Joseph. We'll disable it for now.
If anyone has SP1 installed I recommend you disable your SMTP Application
Filter otherwise you won't be recieving mail from thousands of PostFix
servers.
Thanks
Jon
On Thu, 7 Feb 2002, Jason Ballard wrote:
> http://www.ISAserver.org
>
>
> 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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