_acme-challenge.smtp.ewe.net. A RRSIG NSEC
Question and response
Question
dig smtp.ewe.net. NSEC
Answer
smtp.ewe.net. 86400 NSEC _acme-challenge.smtp.ewe.net. A RRSIG NSEC
Authority
ewe.net. 86400 NS ans0.ewetel.de.
ewe.net. 86400 NS ans1.ewetel.net.
ewe.net. 86400 NS ans2.ewetel.de.
ewe.net. 86400 NS ans3.ewetel.net.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0