* Tim Bray via mailop <t...@kooky.org>: > > On 30/09/2020 08:17, Patrick Ben Koetter via mailop wrote: > > At the moment the SMTP server itself supports STARTTLS and DANE. We plan to > > add MTA-STS when the feature becomes available. > > > > > > Should it be using TLS for outbound connections? I'm not seeing that?
The mailop.org SMTP server (Postfix) will use * opportunistic DANE if the MX, assigned to receive messages for the recipients domain, offers DANE * opportunistic TLS if the MX, assigned to receive messages for the recipients domain, offers STARTTLS * plaintext SMTP if the recipient domains MX does not offer STARTTLS ATM we have no hard-wired TLS policies in place that e.g. would demand mandatory TLS to a specific destination. > (no problem if that is something you just haven't turned on yet. And thanks > for sorting this all out) > > Received: from mx.mailop.org ([2a03:4000:37:599:d8ce:dff:fee1:81c2]) > by herm.doylem.co.uk with esmtps (Exim 4.92 #3 (Debian)) > id 1kNWO9-0005Hf-1Y The transmission type (here: esmtps) indicates how the transport took place. For a full list of transmission types take a look at RFC 3848 "ESMTP and LMTP Transmission Types Registration" <https://tools.ietf.org/rfc/rfc3848.txt> p@rick -- [*] sys4 AG https://sys4.de, +49 (89) 30 90 46 64 Schleißheimer Straße 26/MG,80333 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer, Wolfgang Stief Aufsichtsratsvorsitzender: Florian Kirstein
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