diff -r a6bc22367c95 -r bb64b8847749 data/dictionary.xml
--- a/data/dictionary.xml	Mon Aug 12 18:54:57 2013 +0200
+++ b/data/dictionary.xml	Mon Aug 12 20:19:21 2013 +0200
@@ -188,6 +188,7 @@
 	</concept>
 	<concept>
 		<term abbreviation="SMTP" completeForm="simple mail transfer protocol" language="en"/>
+		<term abbreviation="ESMTP" completeForm="Extended SMTP" language="en"/>
 		<explanation language="en">
 			<text>
 				a text-based client-server protocol for sending e-mail messages
@@ -199,6 +200,19 @@
 		<tag>protocol</tag>
 	</concept>
 	<concept>
+		<term abbreviation="LMTP" completeForm="local mail transfer protocol" language="en"/>
+		<explanation language="en">
+			<text>
+				a derivative of ESMTP designed for transferring messages locally from MTA component to MDA (mail storage, no queue);
+				uses TCP/IP but must not use port 25 (SMTP);
+				is defined in RFC 2033
+			</text>
+		</explanation>
+		<tag>computer</tag>
+		<tag>messaging</tag>
+		<tag>protocol</tag>
+	</concept>
+	<concept>
 		<term abbreviation="MUA" completeForm="mail user agent" language="en"/>
 		<explanation language="en">
 			<text>
@@ -216,7 +230,13 @@
 	</concept>
 	<concept>
 		<term abbreviation="MTA" completeForm="message transfer agent " language="en"/>
-		<explanation language="en"><text></text></explanation>
+		<term abbreviation="MTA" completeForm="message transport agent " language="en"/>
+		<term abbreviation="MX" completeForm=" mail exchanger" language="en"/>
+		<explanation language="en">
+			<text>
+				a software which transferres 
+			</text>
+		</explanation>
 		<tag>computer</tag>
 		<tag>messaging</tag>
 	</concept>