Postfix stable release 3.7.4 and legacy releases 3.6.8, 3.5.18, 3.4.28

[For updated versions of this announcement please see https://www.postfix.org/announcements/postfix-3.7.4.html]

Fixed in Postfix 3.7, 3.6, 3.5, 3.4:

Fixed in Postfix 3.4, 3.5:

Fixed in Postfix 3.7:

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