Jobst Schmalenbach <[email protected]> wrote:
A number of clients (this includes thunderbird and some apple clients) come by default sset to 465 so I guess that is one reason why I chose this. The other point is that port 465 is an SSL channel with SMTP inside it, so right from the start on the data is encrypted.
You can require TLS at port 587, and then all the data but EHLO will be encrypted. The problem is that 587 is defined as a standard and 465 is not. 465 was proposed in 1997 but revoked in 1998 in favor of TLS over the standard ports (25 or 587). 465 has since been assigned to something else. The only client I know of that ever required 465 was Entourage, a Microsoft product for Mac OS that was discontinued years ago. It's sad to hear that any client today defaults to 465, fourteen years after its use was rejected. I'm afraid it does not astonish me at all but it is sad. Is it time to propose 465 as a standard again? Joseph Brennan Columbia University Information Technology _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
