https://svnweb.freebsd.org/ports?view=revision&revision=409727 The latest update of mail/postfix (from 2.11 to 3.1) breaks existing installations because there are incompatible changes. For example missing VDA support. This should be noted in /usr/ports/UPDATING as was everytime before.
A commit references this bug: Author: ohauer Date: Tue Mar 8 20:40:01 UTC 2016 New revision: 410658 URL: https://svnweb.freebsd.org/changeset/ports/410658 Log: - add note about last the mail/postfix updates and changes PR: 207684 Requested by: Miroslav Lachman Changes: head/UPDATING
UPDATING was lost, sorry about that! I hope the UPDATING text is clear enough for VDA and SPF users.
Just a note. It can be useful for beginners to note the command to stay on the old version: pkg set -o mail/postfix:mail/postfix211 It is usually included in UPDATING entries for things like Perl, Subversion, Ruby etc. where these changes are common. Thank you for your work.
A commit references this bug: Author: ohauer Date: Tue Mar 15 10:31:53 UTC 2016 New revision: 411147 URL: https://svnweb.freebsd.org/changeset/ports/411147 Log: - add note for VDA users how to stay on postfix-2.11.x PR: 207684 Submitted by: Miroslav Lachman Changes: head/UPDATING