Re: Filtering at border routers: Is it possible?

[Grant Taylor]

On 3/24/19 12:23 PM, Matus UHLAR - fantomas wrote:

In early 1997, the Internet Assigned Numbers Authority registered port 465 for smtps.[2] Late 1998 this was revoked when STARTTLS was standardized.[3]

That changed within the last couple of years.  Check out RFC 8314.


 - https://tools.ietf.org/html/rfc8314





--
Grant. . . .
unix || die

Link - Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access TL;DR: SMTPS / TCP port 465 is back on the books. All be it with a weird sordid history.

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