gmx.com is a free email provider

gmx.com is a major consumer mailbox provider. Anyone can open an address, and at this scale a forged message is usually caught by the provider even where the domain's own records would let it through.

Major provider

100 /100

Strong

Email authentication report card

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

3 pass 2 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 ~all

    The record ends in ~all. Mail from a host outside the list is only marked, not rejected, so it usually still arrives.

  • Pass

    DMARC p=quarantine

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

  • Weak

    MTA-STS testing

    A policy is published in testing mode. Failures are reported but delivery still goes ahead over an unverified connection.

  • Pass

    DNSSEC Signed

    The zone is signed, so the MX, SPF and DMARC answers above cannot be quietly rewritten in transit.

  • Pass

    TLS-RPT Published

    Sending servers have an address to report failed TLS deliveries to.

Why it scores 100?

  1. Registered more than five years ago.
  2. DMARC is published and enforced, so forged mail is rejected or quarantined.
  3. Accepts mail through 2 MX hosts.

What to publish to close the gaps

The records gmx.com 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

    Namegmx.com
    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.gmx.com
    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. Switch MTA-STS to enforce

    Valuemode: enforce

    Change mode in https://mta-sts.gmx.com/.well-known/mta-sts.txt and bump the id in the TXT record. Testing mode reports failures but still delivers.

Questions about gmx.com

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

Is gmx.com a disposable email domain?
No. gmx.com is a consumer mailbox provider, so addresses are permanent, but anyone can open one in a minute.
Is gmx.com 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 gmx.com publish SPF and DMARC?
gmx.com 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 gmx.com?
Mail for gmx.com is handled by United Internet (GMX, Web.de), which carries 4 other domains we track.
How old is the gmx.com domain?
The gmx.com domain was registered 32 years ago. The registrar of record is World4You Internet Services GmbH.
How do I block gmx.com on my signup form?
We do not classify gmx.com as disposable, so blocking it outright would turn away real people. If you want to act on it, decide on the signals listed above rather than the name.
Can I trust email from gmx.com?
gmx.com scores 100 out of 100, which is a strong 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.