Hi @msalle - I interpreted Wei's input as basically "do RFC2818 first; emit a warning; then, based on configuration, decide whether to fallback to DNS (and/or other overrides)". The only "tweak" I'd make is to disallow the client from delegating proxies (e.g., a new use case) if it trusted DNS. As we add proxy delegation to the Xrootd client, I'd prefer to start out right. Brian -- You are receiving this because you commented. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/841#issuecomment-433071565 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1