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emailrules.today

Authentication history · 60 days observed

ruggable.com

Observed from 4 Aug 2026 to 3 Oct 2026. 1 dated move on record, newest first.

Where it stands today

Live lookup, 3 Oct 2026. The same check /check/ruggable.com runs.

  • 1worth a look
  • 3fine
  • 1context
  • Worth a look

    This record authorises nobody at all

    There is no include:, ip4: or mx before the all mechanism, so the record says that no host on the internet may send as this domain. That is the correct setting for a domain nobody sends from, and it means every message fails on a domain somebody does.

    v=spf1 redirect=cf3962es._spf._d.mim.ec

    From Gmail enforces authentication, PTR, TLS and a 0.30 percent spam rateSee what this looks like →

    This one needs you

    Answer one question: does any campaign leave from this exact domain? If nothing does, this record is right and you are finished. If something does, send yourself one message and read the Authentication-Results header — it will say =fail, and it has been saying so since the record went up.

  • Looks fine

    present with p=quarantine

    A policy that actually instructs receivers, which is more than most senders publish.

    v=DMARC1; p=quarantine; rua=mailto:5b05787c910f297@rep.dmarcanalyzer.com; ruf=mailto:5b05787c910f297@for.dmarcanalyzer.com; fo=1;

    From DMARC p=none is monitoring, not enforcementSee what this looks like →

  • Looks fine

    keys published on 4 selectors

    A key existing is not the same as working. Read a real received header and check the d= value matches your before you call this done.

    google._domainkey (Google Workspace), mandrill._domainkey (Mandrill), s1._domainkey (SendGrid), s2._domainkey (SendGrid)

    From DKIM passing is not DKIM alignedSee what this looks like →

    Part platform, part you

    The key is your platform's to publish and it has. Whether it signs the domain in your is yours to confirm, and cannot show it — send one campaign to yourself and look for =pass header.d=ruggable.com in the Authentication-Results header.

  • Looks fine

    SendGrid is authorised on send.ruggable.com

    SendGrid signs mail as this domain, and the root record does not name it — which on its own looks like a mismatch. It is not: send.ruggable.com publishes its own SPF naming SendGrid, and SPF is evaluated against the envelope domain rather than the root. This is the normal setup for bulk mail on a subdomain.

    v=spf1 redirect=cf3962es._spf._d.mim.ec

    From Gmail enforces authentication, PTR, TLS and a 0.30 percent spam rateSee what this looks like →

  • Context

    MX records present

    Where you receive mail says nothing about where you send it. Marketing sends usually leave through a different platform entirely.

    gh-mail.ruggable.commxb.mailgun.org, us-smtp-inbound-1.mimecast.com, us-smtp-inbound-2.mimecast.com

    See what this looks like →

What has moved

One entry per day a published record actually changed. Days we looked and found nothing different are counted, not listed.

  1. DMARC record changed.

    was: v=DMARC1; p=none; rua=mailto:5b05787c910f297@rep.dmarcanalyzer.com; ruf=mailto:5b05787c910f297@for.dmarcanalyzer.com; fo=1;
    now: v=DMARC1; p=quarantine; rua=mailto:5b05787c910f297@rep.dmarcanalyzer.com; ruf=mailto:5b05787c910f297@for.dmarcanalyzer.com; fo=1;

    From DMARC p=none is monitoring, not enforcement

  2. First observation — what was already published

    SPF published.

    v=spf1 redirect=cf3962es._spf._d.mim.ec

    DMARC published.

    v=DMARC1; p=none; rua=mailto:5b05787c910f297@rep.dmarcanalyzer.com; ruf=mailto:5b05787c910f297@for.dmarcanalyzer.com; fo=1;

    DKIM keys on selectors we probe.

    google._domainkey (Google Workspace), mandrill._domainkey (Mandrill), s1._domainkey (SendGrid), s2._domainkey (SendGrid)

    MX records present.

    gh-mail.ruggable.commxa.mailgun.org, gh-mail.ruggable.commxb.mailgun.org, us-smtp-inbound-1.mimecast.com, us-smtp-inbound-2.mimecast.com
Where this comes from. Public DNS, and nothing else. We read the same TXT and MX records any mail server reads before accepting a message, on the days someone looked. There is no scan, no login, no mail, and no score here — only what was published and the date we saw it. Gaps are days we did not get a clean answer from a resolver, and we would rather leave those blank than guess at them.