DNS Fails for nameservers:

Nameservers match (parent): Some nameservers returned by the parent nameserver are not returned by your nameservers. The following differences were found:

sdns2.ovh.net
ns3029648.ip-149-202-91.eu
Fail

Some of your nameservers did not respond. The following did not respond:

sdns2.ovh.net

Your nameservers returned different nameserver records.

Got 0 records at sdns2.ovh.net… Got 2 records at ns3029648.ip-149-202-91.eu. Fail

Some of your nameservers did not respond authoritatively for your domain. The following nameservers did not respond authoritatively:

sdns2.ovh.net Warning
Number of SOA records: Each of your nameservers should return exactly one SOA record. This was not the case. The following problems were found:

sdns2.ovh.net (0 SOA records) Fail

SOA Serial Match: Your nameservers returned different SOA serial numbers. This probably means that they are not synchronised properly. Fail
SOA Master Nameserver Match: Your nameservers returned different SOA master nameservers. Fail
SOA Admin Email Match: Your nameservers returned different SOA admin email addresses. Fail
SOA Refresh Match: Your nameservers returned different SOA refresh values. Fail
SOA Retry Match: Your nameservers returned different SOA retry values. Fail
SOA Expire Match: Your nameservers returned different SOA expire values. Fail
SOA Minimum TTL Match: Your nameservers returned different SOA minimum TTL value. Fail

MX records have A records: Some of your MX servers do not have A records. I found problems with the following:
jugueterapia.com Fail

WWW record: Your domain does not have a WWW record. This means that people will not be able to find your web site at -
-http://www.jugueterapia.com. Skipping further WWW tests. Fail

Quotes from DNSsy online DNS Test for jugueterapia.com/

From MX Toolbox
Category Host Result
dmarc jugueterapia.com DNS Record not found
dns jugueterapia.com At least one name server failed to respond in a timely manner
smtp jugueterapia.com Reverse DNS does not match SMTP Banner
smtp jugueterapia.com Warning - Does not support TLS.
smtp jugueterapia.com 15.323 seconds - Not good! on Transaction Time

polonus