Wildcard Certificate needed?

Question

Hello, 
 I wan&acute;t to protect a Exchange 2013 through the WAF with a public signed certificate from RapidSSL. 
 
 Is there a need to buy a wildcard certificate? I ask because I&acute;am not sure if I need autodiscover or only OWA/ActiveSync? The endpoints are iPhones, iPads and maybe Windows laptops with Outlook 2013. 
 For iPhones and iPads I would say I only need ActiveSync and that&acute;s why I only need a single domain certificate like mail.domain.com. But if I need autodiscover (??) I need a second subdomain like autodiscover.domain.com - is it correct? 
 
 Thanks, Tom 
 
 edit: sorry wrong discussion forum, please move to general discussion

Bohdan.S · Accepted Answer

Hi, there is a greate write up here, https://blogs.technet.microsoft.com/exchange/2014/03/19/certificate-planning-in-exchange-2013/ that might help. 
 What ever certificate and subdomain you set up on exchange will also have to be set up on the UTM. 
 I would suggest a wildcard certificate, you pick them up for<$60 a year now. GoGetSSL on SSLS both have them cheap but you can find other places as well. 
 Also if you us a wildcard, you can use it on other subdomains on the same domain as well.