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Email Authentication Report for theguardian.com

A live look at how theguardian.com configures SPF, DKIM, DMARC, and transport security, with the grade explained.

A+

theguardian.com

100 out of 100

Scanned: Jul 6, 2026, 1:26 PM

Why this score

The score starts at 100. Every issue below subtracts points based on how much it hurts your deliverability or lets someone spoof you.

Nothing is lowering your score. Every live check passed cleanly.

  • SPF

    Pass

    • Ends with -all (hardfail).

      A hardfail tells receivers to reject any sender that is not listed. This is the strongest and recommended setting.

    • SPF is present and correctly configured.

      A single SPF record was found, it stays within the DNS lookup limit, and it ends with a strong all qualifier.

    DNS lookups7 / 10
    v=spf1 include:_spf.google.com include:spf_c.oraclecloud.com include:_spf.salesforce.com include:_spf1.theguardian.com ip4:199.255.192.0/22 ip4:199.127.232.0/22 ip4:54.240.0.0/18 ip4:69.169.224.0/20 ip4:23.249.208.0/20 ip4:23.251.224.0/19 ip4:76.223.176.0/20 ip4:54.240.64.0/18 ip4:76.223.128.0/19 ip4:216.221.160.0/19 ip4:206.55.144.0/20 ip4:24.110.64.0/18 -all
    allQualifier
    -

  • DKIM

    Pass

    • DKIM is set up (3 valid selector(s) found).

      At least one valid signing key was found, so your outgoing mail can be signed and verified by receivers.

    selectors
    google, k2, k3
    keyType
    rsa
    keyBits
    2048

  • DMARC

    Pass

    • Policy is p=reject (strongest).

      Reject tells receivers to refuse any mail that fails authentication, the strongest protection against spoofing.

    • Aggregate reporting is enabled.

      A rua address is set, so you receive daily reports showing every source that sends as your domain.

    • DMARC is present and enforced.

      A valid DMARC record was found with an enforcing policy, so receivers act on mail that fails authentication.

    v=DMARC1;p=reject;rua=mailto:dmarcreporting@theguardian.com
    policy
    reject
    subdomainPolicy
    reject
    pct
    100
    rua
    mailto:dmarcreporting@theguardian.com
    adkim
    r
    aspf
    r

  • MX

    Pass

    • MX is configured (5 mail server(s)).

      Your domain has MX records and every listed mail server resolves to an IP address, so it can receive mail.

    mxHosts
    aspmx.l.google.com (10), alt2.aspmx.l.google.com (20), alt1.aspmx.l.google.com (20), alt3.aspmx.l.google.com (30), alt4.aspmx.l.google.com (30)
    mxCount
    5

  • Blacklist

    Pass

    • Not on any checked blocklist.

      Your mail server IPs were not found on the public blocklists we checked. Reputation can change, so it is worth monitoring over time.

    ipsChecked
    172.253.158.27, 192.178.158.26, 192.178.211.26
    blocklists
    bl.spamcop.net, dnsbl.sorbs.net

Optional enhancements

Advanced, nice-to-have features. Setting these up (or not) does not change your grade.

  • DNSSEC

    Optional

    • DNSSEC is not enabled.

      DNSSEC is optional, but it protects against DNS spoofing by letting resolvers confirm your records are authentic. Most domains still do not use it.

      How to fix: If your DNS provider and registrar support it, enable DNSSEC to protect your domain from DNS tampering.

  • MTA-STS

    Optional

    • MTA-STS is in testing mode.

      Your MTA-STS policy is in testing mode, so TLS failures are only reported, not enforced. Your inbound mail is not yet protected from downgrade attacks.

      How to fix: Once your TLS-RPT reports look clean, change the policy mode from testing to enforce.

    mode
    testing
    maxAge
    604800
    Read the MTA-STS guide

  • TLS-RPT

    Pass

    • TLS reporting is enabled.

      Your TLS-RPT record is valid, so receivers can report TLS delivery failures to you.

    v=TLSRPTv1; rua=mailto:tlsreporting@theguardian.com
    rua
    mailto:tlsreporting@theguardian.com

  • BIMI

    Optional

    • BIMI is not set up.

      BIMI is optional. It shows your logo next to your emails in supporting inboxes, but it needs an enforced DMARC policy and, for Gmail and Apple Mail, a Verified Mark Certificate (VMC).

      How to fix: With DMARC at quarantine or reject, publish a BIMI TXT record at default._bimi pointing to a square SVG logo, and add a VMC to display it in Gmail and Apple Mail.

    Read the BIMI guide

This report reviews the email authentication records published for theguardian.com. Media and reference sites send newsletters and account mail to large audiences, so the records that authenticate that mail have a direct effect on delivery.

How to read the grade

Everything above is computed live from the records theguardian.com publishes right now. A strong result means SPF authorizes the correct senders, DKIM signs outgoing mail with a valid key, and DMARC sets a policy that instructs receivers on how to handle failures. Where a check is weak, the report shows the exact record involved so the gap is easy to understand.

About this report

This report is generated from publicly available DNS records for theguardian.com and is provided for informational and educational purposes only. SPFWise is not affiliated with, endorsed by, or connected to the owner of theguardian.com. The records shown are the same ones any mail server can query, and the grade updates automatically as they change.

Want the same breakdown for your own domain? Run a free scan to get an identical grade along with the exact records to fix anything that is weak.

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Phishing vs Spoofing: What Is the Difference?

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