Dominic

DNS challenge would be awesome. I think this would resolve the problem with lists/mail/webmail subdomains (https://tools.ietf.org/html/draft-ietf-acme-acme-06#section-8.4)

https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/19116025-dns-authorisation-for-let-s-encrypt here we go

I changed the response scheme to http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006 and autodiscover works fine on iOS 7.1.2

``` en:us [email protected] [email protected] MobileSync https://domain.tld/Microsoft-Server-ActiveSync https://domain.tld/Microsoft-Server-ActiveSync ```

@jkaberg in the response.xml ``` en:us MobileSync ```