sample-ngircd.conf & ngircd.conf(5): document "ServiceMask" option.

doc/sample-ngircd.conf

@@ -180,8 +180,8 @@
 	# this server should establish the connection).
 	;Host = connect-to-host.the.net
 
-	# IP address to use as _source_ address for the connection. if unspecified,
-	# ngircd will let the operating system pick an address.
+	# IP address to use as _source_ address for the connection. if
+	# unspecified, ngircd will let the operating system pick an address.
 	;Bind = 10.0.0.1
 
 	# Port of the server to which the ngIRCd should connect. If you
@@ -201,14 +201,24 @@
 
 	# Set the "Passive" option to "yes" if you don't want this ngIRCd to
 	# connect to the configured peer (same as leaving the "Port" variable
-	# empty). The advantage of this option is that you can actually configure
-	# a port an use the IRC command CONNECT more easily to manually connect
-	# this specific server later.
+	# empty). The advantage of this option is that you can actually
+	# configure a port an use the IRC command CONNECT more easily to
+	# manually connect this specific server later.
 	;Passive = no
 
 	# Connect to the remote server using TLS/SSL (Default: false)
 	; SSLConnect = yes
 
+	# Define a (case insensitive) mask matching nick names that sould be
+	# treated as IRC services when introduced via this remote server.
+	# REGULAR SERVERS DON'T NEED this parameter, so leave it empty
+	# (which is the default).
+	# When you are connecting IRC services which mask as a IRC server
+	# and which use "virtual users" to communicate with, for example
+	# "NickServ" amd "ChanServ", you should set this parameter to
+	# something like "*Serv".
+	;ServiceMask = *Serv
+
 [Server]
 	# More [Server] sections, if you like ...