I got an exception from tekkio.com.ar after entering my Webfinger ID to follow you on that server:
Error: HTTP Error 401: Unable to get host-meta or host-meta.json
at Function.Credentials.register (/home/pump/pump.io/lib/model/credentials.js:161:23)
at next (/home/pump/pump.io/node_modules/step/lib/step.js:51:23)
at IncomingMessage.DialbackClient.post (/home/pump/pump.io/node_modules/dialback-client/lib/dialbackclient.js:208:21)
at IncomingMessage.EventEmitter.emit (events.js:126:20)
at IncomingMessage._emitEnd (http.js:367:10)
at HTTPParser.parserOnMessageComplete [as onMessageComplete] (http.js:149:23)
at CleartextStream.socketOnData [as ondata] (http.js:1491:20)
at CleartextStream.CryptoStream._push (tls.js:544:27)
at SecurePair.cycle (tls.js:898:20)
at EncryptedStream.CryptoStream.write(tls.js:285:13)