I bet when you look at the instructions it says water and fire resistant.
It might keep the contents safe in a typical house fire where the room burns some and the fire department hoses it all down. It will not withstand a total fire or flood.
Your house is darn unlikely to have a flood, so just a wet floor from a plumbing leak is survivable for it. Those fires that California has all the time where entire areas are burned is not something that is practical to build full protection from.
Glad ya got it. I would hate to loose my email server!