Auto email configure for Google App for Business

autodiscover.xml

<?xml version="1.0" encoding="utf-8"?>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
	<Response xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a">
		<Account>
			<AccountType>email</AccountType>
			<Action>settings</Action>
			<Protocol>
				<Type>IMAP</Type>
				<Server>imap.gmail.com</Server>
				<Port>993</Port>
				<DomainRequired>on</DomainRequired>
				<SPA>off</SPA>
				<SSL>on</SSL>
				<AuthRequired>on</AuthRequired>
			</Protocol>
			<Protocol>
				<Type>POP3</Type>
				<Server>pop.gmail.com</Server>
				<Port>995</Port>
				<DomainRequired>on</DomainRequired>
				<SPA>off</SPA>
				<SSL>on</SSL>
				<AuthRequired>on</AuthRequired>
			</Protocol>
			<Protocol>
				<Type>SMTP</Type>
				<Server>smtp.gmail.com</Server>
				<Port>465</Port>
				<DomainRequired>on</DomainRequired>
				<SPA>off</SPA>
				<SSL>on</SSL>
				<AuthRequired>on</AuthRequired>
				<UsePOPAuth>on</UsePOPAuth>
				<SMTPLast>off</SMTPLast>
			</Protocol>
		</Account>
	</Response>
</Autodiscover>

Step 1. You need to add subdomain "autodiscover" on your domain pointed to your server. (ex. autodiscover.example.com)
Step 2. You create directory "autodiscover" in document root for autodiscover.[your-domain]. (Then as necessary you need to restart your web server.)
Step 3. You put this xml (autodiscover.xml) on autodiscover directory.
Step 4. Check your autodiscover URL: http://autodiscover.example.com/autodiscover/autodiscover.xml or https://autodiscover.example.com/autodiscover/autodiscover.xml
( Maybe you need SSL certification and SSL connection settings when the case of it does not working. )

You can customize to settings for other servers connection, when you changed the values of "Server" and "Port" elements.