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| From: | Lyndon Nerenberg |
| Subject: | Re: [Nmh-workers] mts.conf that works with fastmail? |
| Date: | Mon, 23 May 2016 11:52:21 -0700 |
> But we have a number of servers that for various dumb reasons want > to speak SMTP after a TLS negotation has taken place. There's nothing dumb about avoiding downgrade attacks. At least one major cable ISP in western Canada deleted (and maybe still does) the STARTTLS capability from the EHLO responses on port 587 connections through their network. Switching to smtps fixes that right quick.
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