4 Dec
2019
4 Dec
'19
10:03 p.m.
I have a goal of securing email. Updated the company mail server and DNS (CentOS 7 + Postfix, otherwise pretty stock) with support for SPF, DKIM, and DMARC. So far, all good, and everything "just works".
Our mail server has supported SMTP / TLS for a long time, but recently I've been considering requring TLS all the time.
Is there anybody here who's done this? Has it caused any particular fallout? I'm curious about:
1) Requiring SMTP / TLS for any inbound email.
2) Requiring SMTP / TLS for any outbound email.
Thanks