Some proxies use a Proxy Automatic Configuration (PAC) file to allow user browser traffic to go through the proxy.
 
SAE supports the use of PAC files hosted on a web server from SAE 3.0 Patch 1.
 
To allow SAE to use the PAC file, configure the ePolicy Orchestrator (ePO) proxy configuration policy to Use browser proxy settings in the SAE ePO extension.
 
See the documentation for your version of ePO for more information on proxy configuration policies.