Squid&Squidguard bloks Office 365&2013

[Alex36]

Hello everyone , I set up a Squid proxy + Squidguard filter on pfSense with NTLM authentication , the problem is that for each configuration of Outlook or Office 2013 installation , I have to disable the proxy and reactivate it , here's the config Squid :

auth_param ntlm program /usr/local/bin/ntlm_auth –helper-protocol=squid-2.5-ntlmssp
auth_param ntlm children 30
auth_param basic program /usr/local/bin/ntlm_auth --helper-protocol=squid-2.5-basic
auth_param basic children 10
auth_param basic realm Squid proxy-caching web server
auth_param basic credentialsttl 2 hours
acl auth_ntlm proxy_auth REQUIRED
forward_max_tries 25
http_access allow auth_ntlm
http_access allow localhost
http_access deny all

Les ACL safeports : 21 70 80 210 280 403 488 563 591 631 777 901 1025-65535
Les ACL SSlPorts ouverts : 443 563 6001 993 587 995 110 25 10106 143 465

thank you in advance.