I live in Michigan. How to I serve papers to Spouse in Northern Ireland?

We got married in MI. We split up and he went home to Northern Ireland. He wants a divorce as much as I do. I got all papers from DIvorcewriter.com now I'm stuck and don't know how to serve him or if he needs to be and it says it needs to be notorized, where does he do that there? Very confusing. Nothing to split, no kids, should be simple. - Is this your question? Add additional information