diff --git a/configuration-example.yml b/configuration-example.yml
index c9fe236..01d826f 100644
--- a/configuration-example.yml
+++ b/configuration-example.yml
@@ -34,14 +34,8 @@ accepted_domains:
 
 #verbosity: 4 # [0-4], “0” being quiet and “4” meaning printing debug values
 
-# IPC-related variables. By default, only print errors and exceptions.
-#print_ipc_timer:            false
-#print_ipc_connection:       false
-#print_ipc_disconnection:    false
-#print_ipc_extra_socket:     false
-#print_ipc_message_received: false
-#print_ipc_message_sent:     false
-#print_ipc_switch:           false
-#print_ipc_error:            true
-#print_ipc_exception:        true
-#print_keepalive:            false
+# By default, print everything except KEEPALIVE messages.
+#messages_to_mask: [KEEPALIVE]
+
+# IPC-related messages. By default, only print errors and exceptions.
+#ipc_messages_to_show: [ERROR, EXCEPTION]
diff --git a/src/config.cr b/src/config.cr
index af6213b..ff242cd 100644
--- a/src/config.cr
+++ b/src/config.cr
@@ -16,6 +16,13 @@ class Baguette::Configuration
 		# See tools/write-template-zone-file.cr
 		property template_directory : String = "/etc/dnsmanager/templates"
 
+		# Handle messages to display and to mask.
+		# Messages to mask, to focus on what is important.
+		property messages_to_mask : Array(DNSMESSAGE) = [DNSMESSAGE::KEEPALIVE]
+
+		# Path to the log file. No log file = just print everything.
+		property log_file : String? = nil
+
 		def initialize
 		end
 	end
diff --git a/src/main.cr b/src/main.cr
index c611663..96d0716 100644
--- a/src/main.cr
+++ b/src/main.cr
@@ -112,5 +112,9 @@ unless configuration.pass
 	exit 1
 end
 
+if path = configuration.log_file
+	Baguette::Log.log_path = path
+end
+
 service = DNSManager::Service.new configuration
 service.run
diff --git a/src/service.cr b/src/service.cr
index be68b23..199db12 100644
--- a/src/service.cr
+++ b/src/service.cr
@@ -4,6 +4,24 @@ require "baguette-crystal-base"
 require "./config"
 require "./exceptions"
 
+class Array(T)
+	def contains?(value : T)
+		(self.select { |x| x == value }).size > 0
+	end
+end
+
+# WIP: select (dynamically) messages to mask
+
+module DNSManager
+	enum MESSAGE
+		KEEPALIVE
+		# TODO
+	end
+end
+
+alias IPCMESSAGE = Baguette::Configuration::IPC::MESSAGE
+alias DNSMESSAGE = DNSManager::MESSAGE
+
 class DNSManager::Service < IPC
 	property configuration    : Baguette::Configuration::DNSManager
 	getter storage            : DNSManager::Storage
@@ -11,6 +29,14 @@ class DNSManager::Service < IPC
 
 	property authd            : AuthD::Client
 
+	def should_display?(value : DNSMESSAGE)
+		(@configuration.messages_to_mask.select { |x| x == value }).size == 0
+	end
+
+	def should_display?(value : IPCMESSAGE)
+		@configuration.ipc_messages_to_show.contains? value
+	end
+
 	def initialize(@configuration)
 		super()
 		@storage = DNSManager::Storage.new @configuration.storage_directory, @configuration.recreate_indexes
@@ -128,7 +154,7 @@ class DNSManager::Service < IPC
 		if response.is_a? DNSManager::Response::Error
 			Baguette::Log.warning "fd #{"%4d" % event.fd} (#{duration}) #{reqname} >> #{response_name} (#{response.reason})"
 		else
-			if reqname != "KeepAlive" || @configuration.print_keepalive
+			if reqname != "KeepAlive" || should_display? DNSMESSAGE::KEEPALIVE
 				Baguette::Log.debug "fd #{"%4d" % event.fd} (#{duration}) #{reqname} >> #{response_name}"
 			end
 		end
@@ -141,20 +167,20 @@ class DNSManager::Service < IPC
 			begin
 				case event.type
 				when LibIPC::EventType::Timer
-					Baguette::Log.debug "Timer." if @configuration.print_ipc_timer
+					Baguette::Log.debug "Timer." if should_display? IPCMESSAGE::TIMER
 
 				when LibIPC::EventType::Connection
-					Baguette::Log.debug "New connection!" if @configuration.print_ipc_connection
+					Baguette::Log.debug "New connection!" if should_display? IPCMESSAGE::CONNECTION
 
 				when LibIPC::EventType::Disconnection
-					Baguette::Log.debug "Disconnection from #{event.fd}." if @configuration.print_ipc_disconnection
+					Baguette::Log.debug "Disconnection from #{event.fd}." if should_display? IPCMESSAGE::DISCONNECTION
 					@logged_users.delete event.fd
 
 				when LibIPC::EventType::MessageTx
-					Baguette::Log.debug "Message sent to #{event.fd}." if @configuration.print_ipc_message_sent
+					Baguette::Log.debug "Message sent to #{event.fd}." if should_display? IPCMESSAGE::TX
 
 				when LibIPC::EventType::MessageRx
-					Baguette::Log.debug "Message received from #{event.fd}." if @configuration.print_ipc_message_received
+					Baguette::Log.debug "Message received from #{event.fd}." if should_display? IPCMESSAGE::RX
 					handle_request event
 
 				else