morebooks.de

DNSSEC · The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.

DMARC · DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.

DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

MX · The following MX hosts could not be resolved to IPv6 addresses: mail.omniscriptum.it

MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.

DMARC · DMARC policy only applies to 80% of failing mail (pct=80). Raise pct to 100 once you are confident in your setup.

MX · MX records must point to a host name with A/AAAA records, not to a CNAME: mail.omniscriptum.it -> mail01.omniscriptum.it

DMARC · These report addresses are in another domain that has not agreed to receive your reports, so receivers will not send them: mailto:dmarc@omniscriptum.com (needs morebooks.de._report._dmarc.omniscriptum.com). Ask the report provider to publish the record, or check the address.

TLS · MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.