diff --git a/production.ini b/production.ini
--- a/production.ini
+++ b/production.ini
@@ -63,6 +63,15 @@ cut_off_limit = 256000
 force_https = false
 commit_parse_limit = 50
 use_gravatar = true
+
+## alternative_gravatar_url allows you to use your own avatar server application
+## the following parts of the URL will be replaced
+## %(email)s        user email
+## %(md5email)s     md5 hash of the user email (like at gravatar.com)
+## %(size)s         size of the image that is expected from the server application
+#alternative_gravatar_url = http://myavatarserver.com/getbyemail/%(email)s/%(size)s
+#alternative_gravatar_url = http://myavatarserver.com/getbymd5/%(md5email)s?s=%(size)s
+
 container_auth_enabled = false
 proxypass_auth_enabled = false
 default_encoding = utf8