A configuration file for SAGE Publications that includes all of the SAGE journal hostnames is available for download.
Once downloaded, save this file in your EZproxy directory and include the following line as the last line in your EZproxy config.txt:
Whenever you download a new version of the sage.txt file and replace the old file in your EZproxy directory, make sure to restart your EZproxy server for the changes to take effect.
Sage uses nearly 500 unique hostnames. For many EZproxy installations, this can cause EZproxy to reach its MaxVirtualHosts limit. When applying the Sage definition, you should also review: MaxVirtualHosts and in the section on correcting issues, you should follow the instructions with the exception of raising the limit by 500 instead of the recommended 100.