From: Matt Soccio (no email)
Date: Wed May 01 2002 - 14:36:23 EDT
Being in an academic environment and having lots of foreign nationals on
site, I had to drop this rule after about two days of testing it. So many
European, Asian, and academic servers don't dole out this info. After
about three attempts to contact postmasters about the situation, it became
clear to me that if I wanted the legit mail to flow, I had to drop the
rule. I found that even without this rule, the other reject rules
(unknown sender, invalid hostname, and rbl maps) were quite sufficient at
blocking a lot of the same stuff.
On Wed, 1 May 2002, Adam Levin wrote:
>
> I'm curious how many of you are using restrictions that deal with RFC
> issues. Specifically, we're running into a problem because
> reject_non_fqdn_hostname is occasionally (but rarely -- 2 out of 63
> yesterday) preventing valid email from large providers who have
> misconfigured their mail servers somehow. I'm not sure why their mail
> software isn't sending FQDN in the HELO, but it's not. I've pointed
> emphatically at RFC 2821 regarding this requirement, but to no avail. It
> looks like the management are going to require that I remove that
> restriction. Is anyone else using it? One argument the brass have used
> against me is that these companies (that are having their mail to us
> rejected) have not had errors from *anyone else* -- just us.
>
> -Adam
>
> Adam Levin, Senior Unix Systems Administrator | http://www.audible.com/
> Audible, Inc.
> Wayne, NJ, 07470 I don't think my mind has *ever* been
> 973-837-2797 pink and happy.
>
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