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Date:      Mon, 6 Mar 2017 21:45:02 +0000
From:      Shamim Shahriar <>
To:        Quartz <>
Cc:        "" <>
Subject:   Re: Off topic: smtp HELO question
Message-ID:  <>
In-Reply-To: <>
References:  <> <> <>

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One possible workaround, specially for TB is to set hello_argument from the
config editor -- and it does not have to be a fqdn unless you're server
demands it. You can find further details by googling for it.

Hope this helps

On 6 Mar 2017 5:35 p.m., "Quartz" <> wrote:

> So if your NAT transforms internal addresses to W.X.Y.Z and a reverse
>> lookup 'host W.X.Y.Z' returns '' then you should
>> configure your mail client to EHLO as ''
> OK thanks, that's kinda what I was expecting. Unfortunately for me, my
> external address floats around depending on what my ISP gives me, so I
> can't configure a static name in my client to match that. For now I'm
> trying to see what happens if I set it to the name of my domain I own, but
> the servers that host that aren't the ones I send mail through.
> For mail submission you generally
>> identify yourself by logging into the server after switching your
>> connection to TLS,
> I do use TLS, but what I'm trying to debug is not so much that the email
> service *I* use checks, but that the final receiving server scans through
> the headers and flags anything with a NAT address. I'm having intermittent
> problems with some of my mail being flagged as spam when I mail anyone at a
> local university and I'm not sure what's going on yet.
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