Hi, I have 500 squidnt 2.7 stable 5 appliances out at distributed offices. It is being reported to me that when connected to the local caching appliance, intermittently they are getting page cannot display messages when using webmail and adding attachments. If they point to the upstream (parent) cache, they are not experiencing the problem. What I have tried, is to put the URL for the webmail in the nocache.conf file, so it doesn't cache this information, therefore I would assume that its going direct (much the same way as if they pointed their caching appliance to upstream server). The upstream (core) squid appliance is managed outside our company, so we dont have anything to do with it, but it shouldn't matter either as it works pointing directly to it. Does anyone have any suggestions to what I could try or what I am doing wrong? I have pasted the local caching appliance config to help with identifying the problem. Thanks in advance. http_port 8080 cache_peer proxy.xxxxxxxx parent 8080 3130 no-query default login=PASS hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin \? no_cache deny QUERY cache_mem 32 MB maximum_object_size 30720 KB cache_dir aufs d:/squid/var/cache 60000 16 256 auth_param digest children 5 auth_param digest realm Squid proxy-caching web server auth_param digest nonce_garbage_interval 5 minutes auth_param digest nonce_max_duration 30 minutes auth_param digest nonce_max_count 50 auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 acl all src 0.0.0.0/0.0.0.0 acl manager proto cache_object acl localhost src 127.0.0.1/255.255.255.255 acl to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 563 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 563 # https, snews acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT acl snmppublic snmp_community xxxxxxxxxx acl snmpprivate snmp_community xxxxxxxxxx http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports acl block url_regex -i "d:/squid/var/logs/block.conf" acl unblock url_regex -i "d:/squid/var/logs/unblock.conf" acl nocache url_regex -i "d:/squid/var/logs/nocache.conf" no_cache deny nocache http_access deny block !unblock http_access allow all http_access deny all http_reply_access allow all icp_access allow all cache_mgr webmaster visible_hostname SquidNT.proxy.local always_direct deny all never_direct allow all snmp_port 3401 snmp_access allow snmppublic snmp_access allow snmpprivate snmp_access deny all snmp_incoming_address 0.0.0.0 snmp_outgoing_address 255.255.255.255 coredump_dir d:/squid/var/cache access_log d:/squid/var/logs/access.log squid cache_log d:/squid/var/logs/cache.log mime_table d:/squid/var/logs/mime.conf cache_store_log d:/squid/var/logs/store.log redirect_program c:/Perl/bin/perl.exe d:/squid/var/logs/redirector.pl