Hi, Amos I tried squid v3.2.0.17 on a Redhat enterprise server v6.2, x86_64 and it did not work for NTLM authentication. I just kept getting user name and password prompt when I access the site after I put in the user name and password. In the squid log, it shows below two entries repetitively: TCP_MISS/401 1672 GET https://webmail.site.com/ - FIRSTUP_PARENT/10.10.10.10 text/html TCP_MISS/401 293 POST https://webmail.site.com/ews/Exchange.asmx - FIRSTUP_PARENT/10.10.10.10 - I used the option "--enable-ntlm-fail-open" when I compiled squid 3.2.0.17. Ruiyuan -----Original Message----- From: Amos Jeffries [mailto:squid3@xxxxxxxxxxxxx] Sent: Tuesday, May 29, 2012 8:06 PM To: squid-users@xxxxxxxxxxxxxxx Subject: RE: Need help to configure MS Exchange RPC over HTTP On 30.05.2012 03:11, Ruiyuan Jiang wrote: > Thanks for the response Amos. Do you think is it worth to test it > squid v3.2.x on my Solaris box for NTLM auth? I don't have any > problem > to test it out. > I think it is worth it. 3.2 is HTTP/1.1 and avoids all the HTTP/1.0 issues which may still crop up with 3.1. Amos This message (including any attachments) is intended solely for the specific individual(s) or entity(ies) named above, and may contain legally privileged and confidential information. If you are not the intended recipient, please notify the sender immediately by replying to this message and then delete it. Any disclosure, copying, or distribution of this message, or the taking of any action based on it, by other than the intended recipient, is strictly prohibited.