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Date: Wed, 11 Nov 2015 23:12:56 -0500
From: sl@stanleylieber.com
To: 9front@9front.org
Subject: Re: [9front] upas/smtp -h $fqdn not used for HELO dialogue
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> smtp option “-h” is not for HELO host.
> 
> hostdomain is used for FROM address, which is used if the recipient is non-existent.
> FROM address may be different from HELO host.
> while HELO host is the system address of the smtp server.
> 
> look rfc2821 in detail

Thanks.

So, does upas have any facility for controlling the HELO
dialogue? Consider what happens when a terminal, which is
rarely endowed with a valid Internet DNS name, sends a
mail with upas/smtp.

sl