The legal document means that Croft is banned from contacting the reality star, including via text message and through social networking sites. He could face up to five years in jail if he does.
A source told the News of the World: "Mark is furious but Kerry has had enough. He put some nasty messages on Facebook and she is sick of him.
"But she is being fair and will still let him see their kids - he just has to arrange it via solicitors now."
The restrictions will apparently stay in place until Tuesday, when the pair will meet in a London divorce court to fight for custody of their two children - Heidi, 3, and Max, 2.