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Dna.fi

Safe to Send

Dna.fi is operated by DNA Oyj. The domain runs 1 mail exchange and SMTP is responsive, with all three authentication standards in force.

Safe to Send
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Live SMTP handshake against dna.fi mail servers. No email is sent. 10 free per day, no signup.

@dna.fi
No email sent No signup Real-time SMTP

Trusted by 400,000+ senders

4.9/5
From 8,500+ verified reviews
Reached out to support during our API integration last month. Response in under 15 minutes, the rep was so sharp and helpful that by the end of the thread it honestly felt like I was flirting with him. Amazing support team. A+++. Nathan Orozco · Lead Engineer · via X
SOC 2 Type II GDPR CCPA 99.7% Accuracy
Disposable
No
Persistent addresses, not throwaway
SMTP Live
Yes
Mail server responds to SMTP handshake
MX Records
1
Mail exchangers

Mail Exchange (MX) Records for dna.fi Mail Exchange records. They tell other mail servers which hosts are responsible for receiving email at this domain, in priority order. Lower priority numbers are tried first.

1 RECORD
#10
dna-fi.mail.protection.outlook.com 52.101.73.8
Reachable
SMTP Handshake Simple Mail Transfer Protocol. We open a live SMTP connection to the primary MX and read the greeting banner. A response confirms the mail server is alive and accepting connections. Responsive
BANNER220 AM3PEPF00009B9D.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Tue, 12 May 2026 09:11:17 +0000 [08DEADC4360DD518]
Primary mail server accepted SMTP connection and returned a banner during the live audit.

dna.fi Email Authentication SPF · DKIM · DMARC

3/3 PASS
SPF Sender Policy Framework. A DNS record listing which servers are allowed to send mail for this domain. Receivers reject or flag mail from unauthorized servers. Pass
TXTv=spf1 include:_sk.dna.fi include:_st.dna.fi include:_se2.dna.fi include:_se3.dna.fi include:_se4.dna.fi include:_se5.dna.fi include:_se6.dna.fi ~all
Authorized senders are defined and pass SPF policy.
DKIM DomainKeys Identified Mail. The sending server cryptographically signs outbound mail with a private key, and receivers verify the signature using a public key in DNS. Pass
SELECTORDetected via standard selectors
A DKIM signature was detected. Outbound mail from this domain can be cryptographically verified.
DMARC Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject. None
TXTv=DMARC1; p=none; sp=none; aspf=r; adkim=r; fo=0:1:d:s; rua=mailto:dmarc@dnaip.fi,mailto:rua-dmarcreport@telenor.com; ruf=mailto:dmarc-ruf@dnaip.fi,mailto:ruf-dmarcreport@telenor.com
Monitoring only. Receivers take no action when SPF or DKIM fails.

dna.fi Domain Registration WHOIS · Nameservers · Registrar

17 YEARS OLD
RegisteredSeptember 11, 2008
Age17 years
TLD.fi
Registrant
DNA Oy
FINLAND
About this Domain

About dna.fi

dna.fi is a Finnish ISP domain from DNA Oyj, one of Finland's three major telecommunications operators based in Helsinki. DNA provides mobile, broadband, and TV services to Finnish consumers.

dna.fi implements SPF authentication. The service complies with Finnish and EU GDPR regulations.

The dna.fi mail servers validate recipients and reject invalid addresses. The domain does not operate as catch-all.

For delivery to dna.fi, authenticate with SPF and DKIM. Comply with EU anti-spam regulations.

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Common Questions About dna.fi

Is dna.fi a disposable or temporary email provider?
No. dna.fi is not a disposable email provider. It is classified as ISP Email Provider operated by DNA Oyj and addresses on dna.fi are persistent rather than throwaway. Mail sent to a valid dna.fi mailbox reaches a real recipient.
How do I verify if a dna.fi email address is valid?
The fastest way to verify a dna.fi email address is to use our free email checker. Enter any @dna.fi mailbox at the top of this page and our system performs a real-time SMTP handshake against dna.fi's mail servers, confirming whether the mailbox exists, is reachable, and is safe to send to. No email is ever delivered during the check.
Can I check if a dna.fi email exists without sending a message?
Yes. Our real-time email verification API connects directly to dna.fi's mail server, opens an SMTP session, and queries the mailbox using the RCPT TO command without ever transmitting an actual email. The server's response confirms whether the dna.fi mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for dna.fi?
dna.fi currently publishes 1 mail exchange (MX) record. The primary MX is dna-fi.mail.protection.outlook.com, which is the first server contacted when other mail systems try to deliver email to a dna.fi address. The full list with priorities and IP addresses is in the MX Records panel above. MX records tell sending servers where to route email for dna.fi.
Does dna.fi use SPF, DKIM, and DMARC email authentication?
dna.fi enforces all three email authentication standards: SPF, DKIM, and DMARC (policy: none). This is the gold-standard configuration. It means receivers can verify that mail claiming to come from @dna.fi is genuine, and dna.fi's DMARC policy of 'none' instructs receivers how to handle messages that fail those checks.
Why do emails to dna.fi bounce or get blocked?
Bounces from dna.fi usually fall into three buckets: the mailbox doesn't exist (5xx user unknown), the inbox is full, or your sending domain isn't authenticated to dna.fi's satisfaction. The fastest fix is to run each address through a free email verifier before you send, and to make sure your own SPF, DKIM, and DMARC are configured correctly so dna.fi's receivers trust you.
How can I verify a large list of dna.fi email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of dna.fi addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, dna.fi catch-all detection, role-account detection, and disposable-domain matching. Results typically come back within minutes and previously-failed addresses on your blacklist are reprocessed for free. For continuous high-volume needs, see our unlimited email verification API.
Is it safe to accept signups from dna.fi email addresses?
Yes, with normal hygiene. dna.fi is a legitimate email service and signups from @dna.fi behave like any other real user. Pipe each address through a real-time email verifier API at the moment of signup to catch typos and dead mailboxes, but there is no need to block dna.fi by default.
What email format does dna.fi use for usernames?
Most dna.fi mailboxes follow common patterns like first.last@dna.fi, firstinitiallast@dna.fi, or first@dna.fi, but the actual local-part rules depend on DNA Oyj. The only reliable way to confirm whether a specific @dna.fi address exists is to run it through a free email verification tool. Guessing patterns will produce a high bounce rate and damage your sender reputation.
How is the dna.fi risk score calculated?
The 0-to-100 risk score for dna.fi combines disposable-domain classification, mail-server reachability, MX record presence and depth, SPF / DKIM / DMARC enforcement, DMARC policy strength, SMTP banner response, and domain age. Lower scores mean safer to send to. Disposable domains are pinned at the high end of the scale. The dna.fi score is recomputed on every audit so it always reflects the live state of the domain.
Is dna.fi a valid ISP email domain?
Yes, dna.fi is a valid email domain provided by DNA Oyj to its internet subscribers. It is a legitimate ISP-issued email address.
Is dna.fi a disposable or temporary email provider?
No, dna.fi is not a disposable or temporary email provider. It is an ISP-provided email service tied to an internet subscription from DNA Oyj.
What mail server does dna.fi use?
dna.fi uses mail servers operated by DNA Oyj. Check the MX records section above for specific server details and authentication configuration.
Can I send marketing emails to dna.fi addresses?
Yes, you can send marketing emails to dna.fi addresses with proper opt-in consent. ISP email providers apply spam filtering, and addresses may become inactive if subscribers cancel their internet service. Regular list verification is recommended.
How do I verify an email address at dna.fi?
Use BulkEmailChecker to verify dna.fi addresses via SMTP checks. ISP domains may have specific rate limiting or greylisting behaviors. Our tool handles these provider-specific configurations automatically.