Hi! I have an issue with the accel mode in front of an exchange server. When you configure more than one authentication scheme including the basic scheme the authentication does not work - connection will be closed. But when you configure the basic scheme only is starts working. When you have configured more authentication schemes it looks like the exchange autodiscover tries which authentication scheme is the right one - gets back the HTTP Status 200 for basic scheme and for all others 401 and the last connection/session is not for basic scheme so it gets answered with 401 and squid is closing the server side and after detecting a "half closed" connection squid is also closing the client side. Also the "cache_peer" parameter "connection-auth=on" changes nothing. Thanks in advance for your answer Hannes Fasching Get the 13 Email Threat Types eBook https://www.barracuda.com/ This e-mail and any attachments to it contain confidential and proprietary material of Barracuda, its affiliates or agents, and is solely for the use of the intended recipient. Any review, use, disclosure, distribution or copying of this transmittal is prohibited except by or on behalf of the intended recipient. If you have received this transmittal in error, please notify the sender and destroy this e-mail and any attachments and all copies, whether electronic or printed. ________________________________ _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users