title: iOS certificate: Why am I getting an expiration notice?
body: <p>I've been developing iOS enterprise apps for about 7 years now, and I still have trouble understanding the signing certificate stuff. I got an email from Apple warning me that my enterprise distribution certificate is set to expire on December 28, 2017. However, looking at my Keychain data, I see that the expiration date for that particular certificate is Oct 14, 2019. I don't see anything on the list that expires on December 28, 2017.</p>
  
  <p>So I don't know what I am supposed to do: ignore it, and hope my users can continue to use the apps? Or renew it and recompile/redistribute?</p>
  
  <p>Apple seems never to make things easy.</p>
  
  <p>Any help would be appreciated.</p>