On Sun, Apr 05, 2015 at 06:05:20PM -0500, Noel Jones wrote:
> Many sites enable port 465 as a convenience to their customers since
> it doesn't cost anything nor significantly affect security. Other
> refuse to enable port 465 for philosophical reasons.
This could change, there is early stage work in the IETF "Using
TLS in Applications" (UTA) working group to re-introduce port 465
as the preferred MUA to MTA service:
http://tools.ietf.org/html/draft-ietf-uta-email-deep-00
whether that work gains IETF consensus and mail provider mind-share
remains to be seen.
--
Viktor.