arcor.de is a free email provider

arcor.de is a consumer mailbox provider, so anyone can open an address there in a minute.

Free provider ISP mailbox

88 /100

Strong

Email authentication report card

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

2 pass 3 weak

Can mail be forged as this domain?

No, a forgery is rejected

DMARC is set to p=reject and enforced on every message, so a receiver that honours it throws away any mail that fails alignment for this domain.

  • 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=reject

    Receivers are asked to reject any message that fails DMARC. This is the strongest published setting.

  • 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.

  • Weak

    TLS-RPT Not published

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

Why it scores 88?

  1. DMARC is published and enforced, so forged mail is rejected or quarantined.
  2. Accepts mail through 2 MX hosts.
  3. A website answers on this domain.

What to publish to close the gaps

The records arcor.de 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

    Namearcor.de
    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. Switch MTA-STS to enforce

    Valuemode: enforce

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

  3. Publish a TLS reporting address

    Name_smtp._tls.arcor.de
    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.

Questions about arcor.de

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

Is arcor.de a disposable email domain?
No. arcor.de is a consumer mailbox provider, so addresses are permanent, but anyone can open one in a minute.
Is arcor.de spoofable?
No, a forgery is rejected. DMARC is set to p=reject and enforced on every message, so a receiver that honours it throws away any mail that fails alignment for this domain.
Does arcor.de publish SPF and DMARC?
arcor.de 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 arcor.de?
We have not matched the mail hosts for arcor.de to a platform we track, so we do not name one. The hostnames themselves are available with an API key.
How old is the arcor.de domain?
The registry for .de does not publish a registration date we can read, so we do not state an age.
How do I block arcor.de on my signup form?
We do not classify arcor.de 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 arcor.de?
arcor.de scores 88 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.