Senders to my domain get this error: "The response from the remote server was: 550 5.1.1 <xx@xx.com>: Recipient address rejected: User unknown in relay recipient table" The message isn't coming from my email server. Checking my account, my MX record points to my domain (as it should), but when I do a dig it looks like the MX record is mx-caprica.zoneedit.com (I'm not sure if this is by design or not). If I had to guess, this started sometime around noon on May 19th.