use raw host (don't use textToIp) if usedns exactly `raw`, because `usedns = no` should ignore no ip failures

config/jail.conf

@@ -94,6 +94,7 @@ backend = auto
 #        but it will be logged as a warning.
 # no:    if a hostname is encountered, will not be used for banning,
 #        but it will be logged as info.
+# raw:   use raw value (no hostname), allow use it for no-host filters/actions (example user)
 usedns = warn
 
 # "logencoding" specifies the encoding of the log files handled by the jail

fail2ban/server/filter.py

@@ -523,7 +523,7 @@ class Filter(JailThread):
 					self.__lineBuffer = failRegex.getUnmatchedTupleLines()
 					try:
 						host = failRegex.getHost()
-						if returnRawHost or self.__useDns not in ("yes", "warn"):
+						if returnRawHost or self.__useDns == "raw":
 							failList.append([failRegexIndex, host, date,
 								 failRegex.getMatchedLines()])
 							if not checkAllRegex: