On Wed, Sep 30, 2020 at 12:19 PM ml+mailop--- via mailop <[email protected]> wrote:
> On Wed, Sep 30, 2020, Tim Bray via mailop wrote: > > > Should it be using TLS for outbound connections? I'm not seeing that? > > Received: from mx.mailop.org (mx.mailop.org. [91.132.147.157]) > by ... with ESMTPS > (TLS=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384, bits=256, verify=OK) > > > 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)) > ^ > Doesn't the "s" mean STARTTLS was used? > > > RFC 3848 covers this topic: https://tools.ietf.org/html/rfc3848: *The new keyword "ESMTPS" indicates the use of ESMTP when STARTTLS [1] is also successfully negotiated to provide a strong transport encryption layer.* Yes, it means STARTTLS was used successfully. Regards, Ken -- Ken Simpson CEO, MailChannels <https://www.mailchannels.com/?utm_source=Email%20Signature&utm_medium=Ken%20Simpson&utm_campaign=Website> Tel: +1 604 685 7488 Facebook <http://bit.ly/2dnoP3K> | Twitter <http://bit.ly/2ehoWni> | LinkedIn <http://bit.ly/2dw87lU> | Help Center <https://mailchannels.zendesk.com/hc/en-us?utm_source=Email%20Signature&utm_medium=Ken%20Simpson&utm_campaign=Help%20Center> Our latest case study video: watch here! <https://www.youtube.com/watch?v=psb41xDIL9k>
_______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
