On 24 Mar 2019, at 13:12, Grant Taylor <gtay...@tnetconsulting.net> wrote: > That changed within the last couple of years. Check out RFC 8314.
Which I posted a few messages upthread. On 24 Mar 2019, at 13:16, Grant Taylor <gtay...@tnetconsulting.net> wrote: > On 3/24/19 1:00 PM, @lbutlr wrote: >> And didn't Microsoft start using it for their non-standard email in Windows >> 95? > > I'm not sure how non-standard Microsoft's use of SMTP-over-TLS (SMTPS / TCP > port 465) is. The closest thing I remember to non-standard nature was that > they were atypical in their choice of preferring SMTP-over-TLS verses the > more common MSA port combined with STARTTLS. But as far as I know, > SMTP-over-TLS / SMTPS / TCP port 465 is standard. Is now. Was not then. Was not for many many years. TFC 8314 is very recent. >> Also, smtps and SMTPS are not, oddly, then same thing. > > Okay, what do you think the difference is in "smtps" and "SMTPS"? The details escape me,. but they are different. I think the ;lowercase one is the multicast audio . Oh, look, Wikip[edia has some details. <https://en.wikipedia.org/wiki/SMTPS#Difference_between_SMTPS_and_smtps> -- MS Word still hasn't caught up -- it has more bells and whistles, but not as many pistons and cylinders. -- Steve Hayes
