SMTP HELO parameter configuration?
From: Glenn (gwhyman_at_evaluationsolutions.com)
Date: 01/31/05
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Date: Tue, 1 Feb 2005 10:56:52 +1100
Hi,
We have a small stand alone W2k web server housed in commercial data center.
This web server is stand alone and not part of a domain with the name
<BUS_ACRONYM>-W2K. SMTP is configured on this machine to facilitate a
variety of notification emails required to be sent by the web apps hosted
there. We don't have Exchange or any other mail server on this machine, we
are simply using vanilla SMTP.
Now, the question I have is with the W2K SMTP implementation. We are
getting quite a few bounced emails from recipient mail servers due to the
machine name being sent with the HELO command. For instance:
Diagnostic-Code: smtp;504 <NAME-W2K>: Helo command rejected: need
fully-qualified hostname
The default name parameter for the HELO command looks to be the machine
name, but the receiving mail server expects the name to be a fully qualified
domain name (must be doing a reverse DNS lookup). This issue is becoming
more prevalent, probably due to increased spam protection measures.
Is there anyway within W2K Server to change / configure the HELO parameter
in order to use a custom domain name (ie that of an existing site on the
box). For obvious reasons we do not wish to change our machine name.
I'm sure I'm not the first to encounter this, so any help here would be most
appreciated.
Thanks,
Glenn.
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