MyPillow CEO Mike Lindell, Sidney Powell, and Rudy Giuliani have all been sued by Dominion. Drew Angerer/Getty Images, Tom Williams/CQ-Roll Call, Inc via Getty Images, Joshua Roberts/Getty Images Dominion's defamation lawsuit against Mike Lindell is "definitely" not its last, its CEO told CNBC. Lindell, Sidney Powell, and Rudy Giuliani made baseless claims about Dominion's voting machines. Asked whether the company would sue Fox News, John Poulos said Dominion was "not ruling anyone out." Visit the Business section of Insider for more stories. Dominion Voting Systems' CEO said the company would continue to take legal action against people who spread baseless claims that its voting machines were used to "steal" the 2020 US presidential election.Dominion has already filed defamation lawsuits against MyPillow CEO Mike Lindell, the pro-Trump attorney Sidney Powell, and former President Donald Trump's personal lawyer Rudy Giuliani, seeking at least $1.3 billion in damages in each case.Dominion CEO John Poulos told CNBC on Tuesday that the filing against Lindell on Monday was "definitely not the last lawsuit."Dominion has sent cease-and-desist notices and warnings to preserve documents to more than 150 people, The Washington Post reported.