diff --git a/fail2ban-testcases b/fail2ban-testcases
index b241bcb7..0836afee 100755
--- a/fail2ban-testcases
+++ b/fail2ban-testcases
@@ -57,6 +57,7 @@ tests = unittest.TestSuite()
 tests.addTest(unittest.makeSuite(filtertestcase.IgnoreIP))
 tests.addTest(unittest.makeSuite(filtertestcase.LogFile))
 tests.addTest(unittest.makeSuite(filtertestcase.GetFailures))
+tests.addTest(unittest.makeSuite(filtertestcase.DNSUtilsTests))
 # Server
 #tests.addTest(unittest.makeSuite(servertestcase.StartStop))
 #tests.addTest(unittest.makeSuite(servertestcase.Transmitter))
diff --git a/server/failregex.py b/server/failregex.py
index 8536300b..91778003 100644
--- a/server/failregex.py
+++ b/server/failregex.py
@@ -44,7 +44,7 @@ class Regex:
 		self._matchCache = None
 		# Perform shortcuts expansions.
 		# Replace "<HOST>" with default regular expression for host.
-		regex = regex.replace("<HOST>", "(?:::f{4,6}:)?(?P<host>\S+)")
+		regex = regex.replace("<HOST>", "(?:::f{4,6}:)?(?P<host>[\w\-.^_]+)")
 		if regex.lstrip() == '':
 			raise RegexException("Cannot add empty regex")
 		try:
diff --git a/server/filter.py b/server/filter.py
index 457bb031..6bd27ffd 100644
--- a/server/filter.py
+++ b/server/filter.py
@@ -492,7 +492,7 @@ import socket, struct
 
 class DNSUtils:
 	
-	IP_CRE = re.compile("(?:\d{1,3}\.){3}\d{1,3}")
+	IP_CRE = re.compile("(?:\d{1,3}\.){3}\d{1,3}$")
 	
 	#@staticmethod
 	def dnsToIp(dns):
diff --git a/testcases/filtertestcase.py b/testcases/filtertestcase.py
index 66765ea9..7d11c66f 100644
--- a/testcases/filtertestcase.py
+++ b/testcases/filtertestcase.py
@@ -26,7 +26,7 @@ __license__ = "GPL"
 
 import unittest
 from server.filterpoll import FilterPoll
-from server.filter import FileFilter
+from server.filter import FileFilter, DNSUtils
 from server.failmanager import FailManager
 from server.failmanager import FailManagerEmpty
 
@@ -195,3 +195,15 @@ class GetFailures(unittest.TestCase):
 		self.__filter.getFailures(GetFailures.FILENAME_02)
 		
 		self.assertRaises(FailManagerEmpty, self.__filter.failManager.toBan)
+
+class DNSUtilsTests(unittest.TestCase):
+
+	def testTextToIp(self):
+		bogus = [
+			'doh1.2.3.4.buga.xxxxx.yyy',
+			'1.2.3.4.buga.xxxxx.yyy',
+			]
+		"""Really bogus addresses which should have no matches"""
+		for s in bogus:
+			res = DNSUtils.textToIp(s)
+			self.assertEqual(res, [])