Urgent Postfix stable release 3.7.3 and non-urgent legacy releases 3.6.7, 3.5.17, 3.4.27

[For updated versions of this announcement please see https://www.postfix.org/announcements/postfix-3.7.3.html]

Fixed in Postfix 3.7.3:

Fixed in Postfix 3.7, 3.6, 3.5, 3.4:

Fixed in Postfix 3.7, 3.6, 3.5:

You can find the updated Postfix source code at the mirrors listed at https://www.postfix.org/.