On Tue, Oct 04, 2022 at 02:36:14PM -0400, Wietse Venema wrote:
> Viktor Dukhovni:
> > > compatibility_level = 3.5
> >
> > The major.minor syntax was introduced with Postfix 3.6, for Postfix 3.5
> > use "3".
>
> To make forward and reverse migrations easier, the new compatibility_level
> syntax has been backported in postfix-3.5.11, postfix-3.4.21 and
> postfix-3.3.18. Distributions may have picked up these.
Thanks for the correction/reminder, that change didn't register for me
at the time:
postfix-3.5.11
--- a/postfix/HISTORY
+++ b/postfix/HISTORY
+20210612
+
+ Support for Postfix 3.6 compatibility_level syntax, to avoid
+ fatal runtime errors when rolling back from Postfix 3.6 to
+ an earlier supported version, or when sharing Postfix 3.6
+ configuration files with an earlier supported Postfix
+ version. File: global/mail_params.c.
--
Viktor.
