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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Attempt to send email using AWS results in Socket closed by peer
Date: Thu, 2 Sep 2021 17:22:53 -0500
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"Doctor Who" <doc@tardis.org> wrote in message 
news:57j0jgd920r1al3ehsbilbs39041c3eeqd@4ax.com...
...
> port 465 wants a TLS connection.

Good point. One uses port 25 for ordinary e-mail. One does not need to 
authenticate to most public e-mail servers (of course, if you don't, you'll 
be subjected to increased spam checks, but that usually isn't a problem if 
you aren't sending spam).

                       Randy.