I have been getting the following on my new mailserver:

Apr 7 10:17:27 z9m9z dovecot: dict: Error: mysql(localhost): Connect failed to database (postfix): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (13) – waiting for 25 seconds before retry

They go away when I setenforce 0.

So I googled dovecot mysql selinux and the only worthwhile hit was:

http://zszsit.blogspot.com/2012/12/dovecot-mysql-selinux-issue-on-CentOS6.html

that provides a /etc/selinux/dovecot2mysql.te

Is there a simpler way like a setsbool option?

With all the howtos on dovecot with mysql, it is interesting that none of them seem to have this problem. Maybe because they connect to mysql through TCP port 3306 which has ITS set of problems (like MariaDB
defaults to not listening on TCP).

thanks!