Add support for TLS 1.0, 1.1 and 1.2
Corporate Exchange Administrators have been asking for Microsoft to include support for newer secure protocols since Outlook 2008/2011 to support SSL 3.0 instead of just 2.0.
Now security has moved on and SSL is no longer accepted and TLS is required, internally 1.0 is still used but generally for Internet usage only TLS 1.1 and 1.2 are currently accepted.
Yet Outlook 2016 for Mac STILL does not support newer secure protocols, this causes Administrative difficulties as there's pressure to secure On-Premise exchange environments but this has the effect of preventing Mac Outlook users from connecting to their Mailbox.
Please finally add this support and in the future keep up with industry changes in security protocols.
Long thread here in Microsoft Answers forum with more information: http://answers.microsoft.com/en-us/mac/forum/macoffice2011-macoutlook/outlook-2011-to-use-sslv3/7e777e6b-9e92-4a89-8874-d357c4bdf6ef
Wayne Gibson commented
Outlook for Mac doesnt have TLS support for outgoing mail and therefore we are having issues with business email on Macs.
Hi, I need to work with SSL on my company, but my Outlook 2016 doesn't use TLS 1.2. Do you have a date where it will be released this TLS 1.2
William Killyou commented
This is a disgrace! I began having problems with my Outlook for mac pop connection not working with the AOL administered Verizon servers. I ensured the Outlook client was up to date and did a trace via Wireshark of the handshake and sure enough the pop server returns a content type alert 21, decryption failed. Outlook attempted to use SSLv2 and then was moved to TLSv1. both considered too insecure and not supported. Bottom line, Microsoft is so far behind it does not work. Microsoft should update both 2011 & 2016 Outlook Mac to use TLSv1.1 & 1.2. Microsoft has always had a reputation for being remiss when it comes to security, well here is your proof!
Now Microsoft wants us all to "rent" software from them, need an internet connection most of the time and store our data on their servers in the so called "cloud". If this company can't ensure that their software releases are up to date with security and encryption why would i trust the security much less the privacy of their cloud infrastructure?
William Killyou commented
I totally agree! I am done with Microsoft!
Keith Gillette commented
I wish I had more votes left to give this feature recommendation, but Outlook Mac functionality lags so far behind its Windows counterpart that prioritizing the gaps for my use is challenging.
In think lack of TLS support on Outlook for Mac is a major oversight. Even the Outlook iOS client supports TLS. How is it that the free product version on iOS seemingly gets more development effort than its paid counterpart on MacOS?