online.ms is a disposable email domain

online.ms hands out throwaway mailboxes, so an address there identifies nobody.

Disposable

0 /100

Poor

Email authentication report card

What online.ms publishes in DNS to stop other people sending mail in its name, read record by record.

1 pass 4 weak

Can mail be forged as this domain?

A forgery is sent to spam, not the inbox

DMARC is set to p=quarantine and enforced on every message, so a receiver that honours it does not reject a forgery outright but files it in spam rather than the inbox. Moving to p=reject would drop it entirely.

  • Weak

    SPF No all mechanism

    An SPF record exists but carries no all mechanism, so a receiver has no instruction for hosts outside the list.

  • Pass

    DMARC p=quarantine

    Receivers are asked to send failing mail to spam rather than the inbox.

  • Weak

    MTA-STS Not published

    No MTA-STS policy, so a sending server has nothing that tells it to insist on verified TLS for this domain.

  • Weak

    DNSSEC Not signed

    The zone is not signed. A resolver has no cryptographic way to tell a real answer from a forged one.

  • Weak

    TLS-RPT Not published

    No reporting address, so failed TLS deliveries to this domain go unnoticed by its owner.

Why it scores 0?

  1. Mailboxes on this domain are throwaway, so no identity stands behind them.

What to publish to close the gaps

The records online.ms is missing, in the order they are worth doing. Owner names are written out in full, so they work whether your DNS panel wants a full name or a relative one.

  1. Tighten SPF to -all

    Nameonline.ms
    TypeTXT
    Valuev=spf1 <your existing mechanisms> -all

    Keep the mechanisms you already have and change the final qualifier. Anything softer leaves the forgery path open.

  2. Raise DMARC to p=reject

    Name_dmarc.online.ms
    TypeTXT
    Valuev=DMARC1; p=reject; pct=100; rua=mailto:[email protected]

    Quarantine sends forgeries to spam, where people still find them. Reject stops delivery.

  3. Publish an MTA-STS policy

    Name_mta-sts.online.ms
    TypeTXT
    Valuev=STSv1; id=<a version string you bump on every change>

    Serve the policy body at https://mta-sts.online.ms/.well-known/mta-sts.txt, start it in testing mode, then switch it to enforce so senders refuse to deliver over an unverified connection.

  4. Publish a TLS reporting address

    Name_smtp._tls.online.ms
    TypeTXT
    Valuev=TLSRPTv1; rua=mailto:[email protected]

    Without it, a sending server that could not negotiate TLS with your mail hosts has nowhere to tell you.

  5. Sign the zone with DNSSEC

    Turn DNSSEC on with your DNS provider, then publish the DS record it hands you at your registrar. Every record above is only as trustworthy as the answer that carries it, and signing the zone is what makes the answers verifiable.

Questions about online.ms

Every answer below is generated from the stored record for this domain.

Is online.ms a disposable email domain?
Yes. online.ms hands out throwaway mailboxes, so an address there tells you nothing about who is behind it.
Is online.ms spoofable?
A forgery is sent to spam, not the inbox. DMARC is set to p=quarantine and enforced on every message, so a receiver that honours it does not reject a forgery outright but files it in spam rather than the inbox. Moving to p=reject would drop it entirely.
Does online.ms publish SPF and DMARC?
online.ms publishes an SPF record, though it does not end in -all, so hosts outside the list are not treated as forgeries. DMARC is published and enforced, so a failing message is rejected or quarantined.
Who handles email for online.ms?
We have not matched the mail hosts for online.ms to a platform we track, so we do not name one. The hostnames themselves are available with an API key.
How old is the online.ms domain?
The online.ms domain was registered 24 years ago. The registrar of record is InterNetX GmbH.
How do I block online.ms on my signup form?
Blocking the exact string online.ms is not enough on its own: a disposable provider adds domains, and some hand out unlimited subdomains under one name. Match the mail platform behind the domain rather than the domain alone, which is what the lookup behind this page does.
Can I trust email from online.ms?
online.ms scores 0 out of 100, which is a poor band. The score is a summary of the classification, infrastructure, authentication, reputation and lifecycle signals we hold, not a judgment about any individual sender at that domain.

Last verified . We recheck every domain on a schedule, and this report changes only when its records or its verdict do.