I'm currently testing IcsTimeClient but I'm running into inexplicable timeouts when trying to get the time of ptbtime1.ptb.de. It looks like it's resolving the IP correctly (192.53.103.108) and when I try to get the time from the same server via the Indy-Component it works.
Other servers, like the NIST-servers NIST Internet Time Service work with IcsTimeClient too.
I tried both, with the OverbyteIcsTimeTst program and my own, reduced to the basics, one.