Hi Andy, You are right: it gives the same proxy delegation error going the other way round, but this one actually fails: xrdcp --tpc delegate only root://prometheus.desy.de:1095/VOs/dteam/testRAL3p root://xrootd.echo.stfc.ac.uk:1094/dteam:test1/testDESY3r secgsi: proxy delegation forbidden when trusting DNS! [0B/140B][ 0%][> ][0B/s] Run: [ERROR] Server responded with an error: [3005] [FATAL] Auth failed I attach the output from that command with `XrdSecDEBUG=1 XrdDEBUG=1`, [here](https://github.com/xrootd/xrootd/files/3626932/xrdcp2.log). Thanks, Tim. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/1055#issuecomment-532712718 ######################################################################## 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