According o the RootsWeb Blog:
“We will be moving our Mailing Lists to newer and what should be better performing machines on Thursday July 26, 2018.
“You can expect somewhere between 4 and 8 hours of downtime.
“No emails will be lost, but everything will be delayed. Also, your admin tools will not be available.”
You can read more at: http://bit.ly/2uKliIi.