Error:
Couldn't drop privileges: User is missing UID (see mail_uid setting)
Switch include order in conf.d/10-auth.conf
to fix the problem.
diff --git a/conf.d/10-auth.conf b/conf.d/10-auth.conf
index e9cfd05..fbfed63 100644
--- a/conf.d/10-auth.conf
+++ b/conf.d/10-auth.conf
@@ -119,8 +119,8 @@ auth_mechanisms = plain login
#!include auth-deny.conf.ext
#!include auth-master.conf.ext
-!include auth-system.conf.ext
!include auth-sql.conf.ext
+!include auth-system.conf.ext
#!include auth-ldap.conf.ext
#!include auth-passwdfile.conf.ext
#!include auth-checkpassword.conf.ext
なんぞこれ
Thank you.