ignore exceptions thrown by InetAddress.getByName()

[org.ibex.mail.git] / src / org / ibex / mail / DNSUtil.java

diff --git a/src/org/ibex/mail/DNSUtil.java b/src/org/ibex/mail/DNSUtil.java
index 3e066c7..403ff1a 100644 (file)
--- a/src/org/ibex/mail/DNSUtil.java
+++ b/src/org/ibex/mail/DNSUtil.java
@@ -9,6 +9,9 @@ import org.xbill.DNS.Message;
 import javax.naming.*;
 import javax.naming.directory.*;
 
+
+// FEATURE: use DNSJava for reverse lookups?
+// FEATURE: investigate other cool stuff in DNSJava we can use
 public class DNSUtil {
 
     public static String reverseLookup(InetAddress ip) throws IOException {
@@ -45,9 +48,13 @@ public class DNSUtil {
                     // FIXME we should be sorting here
                     mx = mx.substring(mx.indexOf(" ") + 1);
                     if (mx.charAt(mx.length() - 1) == '.') mx = mx.substring(0, mx.length() - 1);
-                    InetAddress ia = InetAddress.getByName(mx);
-                    if (ia.equals(IP.getIP(127,0,0,1)) || ia.isLoopbackAddress()) continue;
-                    ret[i++] = ia;
+                    try {
+                        InetAddress ia = InetAddress.getByName(mx);
+                        if (ia.equals(IP.getIP(127,0,0,1)) || ia.isLoopbackAddress()) continue;
+                        ret[i++] = ia;
+                    } catch (Exception e) {
+                        Log.info("safe to ignore", e);
+                    }
                 }
             }
         } catch (Exception e) {