diff -r d967fef53cb4 -r 6e40c68b40b9 data/dictionary.xml
--- a/data/dictionary.xml	Mon Aug 12 21:44:45 2013 +0200
+++ b/data/dictionary.xml	Mon Aug 12 21:54:13 2013 +0200
@@ -231,11 +231,13 @@
 	</concept>
 	<concept>
 		<term abbreviation="MTA" completeForm="message transfer agent " language="en"/>
-		<term abbreviation="MTA" completeForm="message transport agent " language="en"/>
+		<term abbreviation="MTA" completeForm="mail transfer agent " language="en"/>
 		<term abbreviation="MX" completeForm=" mail exchanger" language="en"/>
 		<explanation language="en">
 			<text>
-				a software which transferres 
+				a software component which transferres e-mails from one computer to another using SMTP protocol (implements both sending and receiving);
+				messages can be passed over network (relayed) or for local recipients stored locally (passing them to the MDA using LMTP);
+				examples of MTA: Postfix, Sendmail, Exim, Courier Mail Server, Apache James
 			</text>
 		</explanation>
 		<tag>computer</tag>