Hi, I am trying to use an external acl to "toggle" a reply_body_max_size, so im my conf i have the following reply_body_max_size 1 MB extaclname and extaclname is setup to run a check on some data and return its findings with an OK or ERR, the ext acl works correctly as its used elsewhere in squids workings but i cannot get it restrict the reply size when it should be, in fact it appears never to "run" the acl as some debug message in the external check are never fired I have found this very old posting http://www.mail-archive.com/squid-users@xxxxxxxxxxxxxxx/msg59937.html which mentions " you may be able to get this to work then by adding the ACL test to an http_reply_access line as well." but im not sure how to implement this in anyway that would affect the line i have above any ideas or hints would be great thank cam