[squid-users] SquidNT 2.6 Stable 16 - Uploading Files Problem

Hi, I have a number of SquidNT 2.6 Stable 17 caches running on Windows XP machines.  I am being told that users are having problems uploading files to webmail apps and other sites (moodle) that allow for uploading. I am not sure what I should be looking at, is there anything that I should be looking at?  I have supplied my config file, removing any company specific information.  Thanks.  If they bypass the local squidnt proxy, they can successfully upload.
 
http_port 8080
cache_peer proxy.############### 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 c:/squid/var/cache 60000 16 256
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 ###############
acl snmpprivate snmp_community ###############
acl Purge method PURGE
http_access allow localhost Purge
http_access deny Purge
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 "c:/squid/var/logs/block.conf"
acl unblock url_regex -i "c:/squid/var/logs/unblock.conf"
acl nocache url_regex -i "c:/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 c:/squid/var/cache
access_log c:/squid/var/logs/access.log squid
cache_log c:/squid/var/logs/cache.log 
 
 
Received on Tue Dec 09 2008 - 20:48:31 MST