Free email security report

Here's how 2wu.de protects its email

Checked August 02, 2026 04:33

0 Bad

Core protections

SPF

Not configured

No SPF record was found. Anyone can send email that appears to come from this domain.

Show raw DNS record 
No record found.

DKIM

Not configured

No DKIM signing key was found under any common selector. Recipients have no way to verify a message wasn't altered in transit.

Show raw DNS record 
No record found.

DMARC

Not configured

No DMARC record was found. There's no policy telling mail providers what to do with spoofed mail claiming to be from this domain.

Show raw DNS record 
No record found.

Advanced protections

MTA-STS Not found TLS-RPT Not found DNSSEC Not found BIMI Not found CAA Not found

Want this level of protection for your own attachments?

Adlerwacht adds passkey-verified, end-to-end secured delivery on top of whatever your domain already has configured.

Start free trial Talk to sales

What do these mean?

What is SPF?

SPF (Sender Policy Framework) is a DNS record listing which mail servers are allowed to send email for a domain. Without it, anyone can forge the "From" address.

What is DKIM?

DKIM (DomainKeys Identified Mail) cryptographically signs outgoing email, letting the receiving server verify it wasn't altered in transit and really came from this domain.

What is DMARC?

DMARC tells receiving mail servers what to do with messages that fail SPF or DKIM checks — ignore them, quarantine them, or reject them outright.

What is MTA-STS?

MTA-STS forces incoming mail to this domain to travel over an encrypted, certificate-verified connection, closing off a common way attackers intercept mail in transit.

What is CAA?

A CAA record lists which Certificate Authorities are allowed to issue TLS certificates for a domain, making it harder for an attacker to get a fraudulent certificate issued elsewhere.