Is there a way to acces the host file in iPhone/iPad?

Is there a way to acces the hostfile in iPhone/iPad?

No. This is not supported, and has never been supported, on iOS.

Even on macOS, where it is supported, it exists solely as a compatibility measure. I generally recommend that software developers stay away from it.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

our exchange server are located in our internal company web. I'm using open vpn to get access. If I want to connect my mail client with the exchange server the client is trying to find out the A-Record via DNS request for the exchange server. But this failed At my notebook and also macbook i changed the hosts to 192.168.*** autodiscover.domain.de 192.168.*** owa.domain.de ..

To change the real DNS to interal IP doesn't work

hmmmm peter