Thx that resolved the issue. -----Original Message----- From: Amos Jeffries [mailto:squid3@xxxxxxxxxxxxx] Sent: 20 August 2013 14:44 To: squid-users@xxxxxxxxxxxxxxx Subject: Re: office 365 not accessible via squid proxy On 20/08/2013 8:45 p.m., Gaurav Saxena wrote: > This is the log when I access that url - There you go: > 1376988310.614 0 182.71.29.59 TCP_MISS/503 0 CONNECT > outlook.office365.com:443 - HIER_NONE/- - outlook.office365.com domain resolves to a set of 25 IP addresses, most of which will reject connections depending on the part of the planet you are in. Squid by default tries the first 10 connection paths (ie the first 10 of those 12 IPv6 addresses) before giving up. You can avoid this failure by setting "forward_max_tries 25". > 1376988310.980 0 182.71.29.59 TCP_DENIED/403 3645 CONNECT > xsi.outlook.com:10106 - HIER_NONE/- text/html This is denied because port 10106 is not a known SSL_port. Add it to your SSL_port ACL definition if you want these connections to go through (you may or may not). Amos