Super speedy response to a problem. I reported a problem on Saturday 20th May 13:15 - I could not get ddclient (attempting to update a subdomain's IP address) to authenticate after several days trying. I constantly received "bad auth". I received a reply on SUNDAY 21st May in the afternoon explaining that I could not authenticate against a subdomain - I had to use &alias= after the main domain name. I.e. the solution was not complex - the problem being caused by my misunderstanding that some people call subdomains "Alias" of the main domain for some reason. I used to think that CNAME records were aliases to the canonical name and A records were subdomains. Ho hum. However, I think that this is an all-time record for a speedy response to a problem - on a weekend as well! PS I am a paying client of dynu just for the record.