Error handling when requesting auth token

[alexaxb]

It would be nice to add a try/catch around the oauth token request down below, so if for some reason you are not allowed to request the token, it gets logged as an error.

$response = Invoke-RestMethod -Uri $azureTokenURL -Method "POST" -Body $ReqTokenBody

#instead of a username/password, use the OAuth access_token as the means to authenticate to Exchange
$exchangeService.Url = [System.Uri]$ExchangeEndpoint
$exchangeService.Credentials = Microsoft.Exchange.WebServices.Data.OAuthCredentials

[AdhocAdam]

It would be nice to add a try/catch around the oauth token request down below, so if for some reason you are not allowed to request the token, it gets logged as an error.

and triggers a Custom Event? I can think of a couple opportunities here. 😄

In any case, if you want to make a Pull Request against the dev branch I'm always open to reviewing. Especially as I'm working towards v5.