I first installed Let’s Encrypt certificates about 75 days ago - had no problem used certbot-auto --apache certonly. Time to renew and am not able to renew due to SERVFAIL timeout looking up A. Installed latest certbot still no luck. To the best of my knowledge (and having checked) there has been no change in the server or the DNS settings. Server is Ubuntu 14.04 with Apache and serving Owncloud.
Any assistance which may solve this problem will be greatly appreciated - only got about 15 days till expiry.