Improve fail_with granularity for 400 error

Also corrects BadConfig to NoTarget in another one of my modules. Oops.

modules/exploits/unix/fileformat/imagemagick_delegate.rb

@@ -89,7 +89,7 @@ class MetasploitModule < Msf::Exploit
         target[:template]
       ))
     rescue Errno::ENOENT
-      fail_with(Failure::BadConfig, "Target has no #{t} support")
+      fail_with(Failure::NoTarget, "Target has no #{t} support")
     end
   end
 

modules/exploits/unix/webapp/wp_phpmailer_host_header.rb

@@ -137,9 +137,13 @@ class MetasploitModule < Msf::Exploit::Remote
     )
 
     if res.nil?
-      fail_with(Failure::UnexpectedReply, 'Server returned nil response')
+      fail_with(Failure::NotFound, 'Server returned nil response')
     elsif res && !res.redirect?
-      fail_with(Failure::UnexpectedReply, "Server returned code #{res.code}")
+      if res.code == 400 && res.headers['Server'].start_with?('Apache')
+        fail_with(Failure::NotVulnerable, 'HttpProtocolOptions may be Strict')
+      else
+        fail_with(Failure::UnexpectedReply, "Server returned code #{res.code}")
+      end
     end
 
     res