<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7036.0"> <TITLE>Nagios + Postfix </TITLE> </HEAD> <BODY>  I can not seem to get any notifications through from Nagios, I installed postfix as suggested but I just keep getting my mails queuing, so far I have over 200 sitting there with the same status message Lost connection with mail.proweb.co.uk while sending MAIL FROM Has anybody else had this issue and if so how did you fix it. Cheers Martyn </BODY> </HTML>