This article explains how to forward the root of the the Email Module Vanity URL (which normally displays a 404 page not found) to another URL - either internal (e.g. another Vuture page) or external (typically your website).
Your Vuture team will create a page called default.aspx in the root of the your exchange-sites folder and insert the following code replacing redirect_url with the redirect destination.
The Vuture infrastructure team will be able to add this page to the exchange-sites root folder.
\\{fsxDirectory}\share\domains-managed\{instanceID}\exchange-sites\default.aspx
<%@Page Language="C#" Debug="False"%>
<%
string querystring = Request.QueryString.ToString();
if (false == String.IsNullOrEmpty(querystring))
{
querystring = "?" + querystring;
}
string userAgent = Request.UserAgent.ToLower();
if (!userAgent.Contains("zabbix"))
{
Response.StatusCode = 301;
Response.Status = "301 Moved Permanently";
Response.RedirectLocation = "https://redirect_url" + querystring;
Response.End();
}
%>
Test it is working correctly by navigating to the root of the vanity URL (i.e. just the domain name part) and check that it forwards to the desired URL.