I have configured my proxy servers in two regions for backup internet path of each other by declaring the following directives. Directives on Proxy A: cache_peer A parent 8080 0 proxy-only prefer_direct on nonhierarchical_direct off cache_peer_access A allow all Directives on Proxy B: cache_peer B parent 8080 0 proxy-only prefer_direct on nonhierarchical_direct off cache_peer_access B allow all Is there a way that whenever a peer cache is used an email alert is generated to the admins. thanking you & Best Regards, Bilal