From 906985c1f3ea9ee59a346a153d2f570aad684b80 Mon Sep 17 00:00:00 2001
From: Jean Raby <jraby@inverse.ca>
Date: Fri, 13 Sep 2013 11:19:44 -0400
Subject: [PATCH] Call MSExchangeHostname on SOGoDNSource only

Fixes #2418
---
 SoObjects/Appointments/SOGoFreeBusyObject.m | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/SoObjects/Appointments/SOGoFreeBusyObject.m b/SoObjects/Appointments/SOGoFreeBusyObject.m
index 13622ae4f..18f08e10b 100644
--- a/SoObjects/Appointments/SOGoFreeBusyObject.m
+++ b/SoObjects/Appointments/SOGoFreeBusyObject.m
@@ -294,7 +294,9 @@
           contact = [contacts lastObject];
           email = [contact valueForKey: @"c_email"];
           source = [contact objectForKey: @"source"];
-          if ([email length] && [source MSExchangeHostname])
+          if ([email length]
+              && [source conformsToProtocol: @protocol (SOGoDNSource)]
+              && [source MSExchangeHostname])
             {
               exchangeFreeBusy = [[MSExchangeFreeBusy alloc] init];
               [exchangeFreeBusy autorelease];