I am significantly displeased with some of the newer versions of Microsoft Outlook. I would prefer to continue using my older version from Office 2000 (on Windows 7 using workarounds). As a networked application which is no longer being updated by Microsoft, is it critical to update this application to the latest version of Outlook 2016?
I am curious because I intend to continue using the rest of Office 2000 (Word, Excel, etc.) alongside firewall rules which prevent internet access. (If you think this is also a bad idea, please detail why). Obviously, Outlook will have to communicate over Port 25 to the mail server, what kind of threats will I face from unknown senders that won't be a problem in Outlook 2016... most email security seems to center on safe reading habits. However, I have looked through some Outlook CVE's and its quite clear there are numerous exploits which "could allow a remote attacker to run arbitrary code..." on both older versions and new.