Hi, > I'm setting up a new postfix 3.5.4 server on a Centos 8 box and, > no matter what config i make, i can't get TLSv1 (yes, sorry, need to > support some old clients until the end of the year) support to work.
I have been working with Red Hat Enterprise Linux 8 and very likely CentOS is using the same new "Systeme-wide crypo policies" mechanism that may interfere with your configuration. Details here: [ https://access.redhat.com/articles/3666211 ] [ https://access.redhat.com/articles/3642912 ] There is a way to change a different system policy; or you can keep it and only tweak what you need (I did something like that for OpenSSH). Hope this help. Sincerely, -- Xavier Belanger