Index: doc/example-config/conf.d/20-managesieve.conf
--- doc/example-config/conf.d/20-managesieve.conf.orig
+++ doc/example-config/conf.d/20-managesieve.conf
@@ -3,18 +3,18 @@
 ##
 
 # Uncomment to enable managesieve protocol:
-#protocols = $protocols sieve
+protocols = $protocols sieve
 
 # Service definitions
 
-#service managesieve-login {
-  #inet_listener sieve {
-  #  port = 4190
-  #}
+service managesieve-login {
+  inet_listener sieve {
+    port = 4190
+  }
 
-  #inet_listener sieve_deprecated {
-  #  port = 2000
-  #}
+  inet_listener sieve_deprecated {
+    port = 2000
+  }
 
   # Number of connections to handle before starting a new process. Typically
   # the only useful values are 0 (unlimited) or 1. 1 is more secure, but 0
@@ -26,7 +26,7 @@
 
   # If you set service_count=0, you probably need to grow this.
   #vsz_limit = 64M
-#}
+}
 
 #service managesieve {
   # Max. number of ManageSieve processes (connections)
