Hi I already found out why this didn't work ... but I have another problem. I have setup the SSL connection to use client certiticate authorisation like this: https_port webmail:443 \ defaultsite=webmail.foo.com vhost \ cert=/usr/local/etc/squid/certs/webmail.foo.com.pem \ clientca=/etc/CA/keys/ca.pem \ cafile=/etc/CA/keys/ca.pem \ crlfile=/etc/CA/keys/crl.pem \ capath=/usr/local/etc/squid/certs I get this working up to the point that the servers asks the client for a certificate then I get the error: SSL unknown certificate error 12 Probably this has something to do with the fact that I don't really understand how I have to set the config ... For what I understand: 1. clientca: has to point to the CA authority's certificate 2. cafile: absolutely not clear what goes inhere 3. capath: absolutely not clear what goes inhere (do I need it??) TIA Bert. "Bert Moorthaemer" <bert.moorthaemer@xxxxxxxxxx> wrote in message news:eisb0p$12g$1@xxxxxxxxxxxxxxxx > Hi all! > > I have the following config for Squid2.6STABLE4: > > https_port webmail:443 cert=/usr/local/etc/squid/certs/webmail.foo.com.pem > defaultsite=webmail.foo.com protocol=http vhost > > cache_peer x.x.x.x parent 80 0 no-query originserver front-end-https > proxy-only > cache_peer_domain x.x.x.x webmail.foo.com > > acl Websites type accelerated > acl Website_domains dstdomain webmail.foo.com > > http_access allow Websites Website_domains > http_access deny Websites > > The problem is that is can't authenticate with my Exchange Server. When I > get the login dialog from my Exchange Server and enter the *right* > credentials I get an access denied after 3 tries. Do I have a config > problem here??? > > Next to this I also get a certificate error in my browser claiming that > the cerfiticate could not be verified properly. I have a valid VeriSign > signed certificate for this website .... can this be a problem of IE 7?? > > TIA > > Bert. > > >