Two Macs can connect to a URL, another on the same network may not

So far, I can connect this behavior to a unique URL only - but of course, it's an I need to get in order to save some software on this particular machine.

I emptied the cache, flushed the DNS cache and checked that I use valid DNS servers. It isn't Safari, chrome this brings. Two Macs reached the URL without any problem, but this new model Mac Pro simply will not reach it and traceroute expires after a few jumps. All three machines are on the same network, all three use the same DNS servers. I rebooted several times.

All three Mac running the latest El Capitan. The two reach the URL are a MacBook Pro and a Mac Mini Server.

I'm puzzled.

Please note that a traceroute on all three machines reveals the slowdown even at the same jump in the chain, but only the Mac Pro seems to have trouble with it.

Tags: Mac OS & System Software

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