Domain Intelligence
Last Updated:
Sandelf.de
Disposable / Temporary
Sandelf.de is a disposable email service. Addresses at this domain are designed to be used once and discarded within minutes. Mail sent here will not reach a real person and signups using these addresses are a strong fraud signal.
Throwaway addresses, not real recipients. Anyone signing up with a sandelf.de address is almost certainly trying to bypass your verification flow. Sending here will hurt your sender reputation, and treating these signups as fraud signals is the safe default.
Do Not Send
RISK
95
/100
Critical
Disposable
Yes
Throwaway, single-use addresses
SMTP Live
No
Mail server not responding to SMTP
MX Records
1
Mail exchangers
Mail Exchange (MX) Records for sandelf.de Mail Exchange records. They tell other mail servers which hosts are responsible for receiving email at this domain, in priority order. Lower priority numbers are tried first.
#10
abusekiste.net 81.20.123.199
No Response
SMTP Handshake
Simple Mail Transfer Protocol. We open a live SMTP connection to the primary MX and read the greeting banner. A response confirms the mail server is alive and accepting connections.
No Response
BANNER220 sandelf.de ESMTP Service Ready
Primary mail server did not respond to SMTP within the audit timeout. Mail to sandelf.de may bounce.
sandelf.de Email Authentication SPF · DKIM · DMARC
SPF
Sender Policy Framework. A DNS record listing which servers are allowed to send mail for this domain. Receivers reject or flag mail from unauthorized servers.
Pass
TXTv=spf1 -all
Authorized senders are defined and pass SPF policy.
DKIM
DomainKeys Identified Mail. The sending server cryptographically signs outbound mail with a private key, and receivers verify the signature using a public key in DNS.
Missing
No DKIM signature detected on common selectors for sandelf.de.
No DKIM signature was detected. Receivers cannot verify the integrity of outbound mail.
DMARC
Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject.
Missing
No DMARC record published at _dmarc.sandelf.de.
No DMARC policy is published. Receivers have no instruction for handling failed messages from this domain.
sandelf.de Domain Registration WHOIS · Nameservers · Registrar
Last UpdatedOctober 29, 2020
TLD.de
Authoritative Nameservers (3)
- ns2.inwx.de
- ns3.inwx.eu
- ns.inwx.de
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Common Questions About sandelf.de
Is sandelf.de a disposable or temporary email provider?
Yes. sandelf.de is listed in our directory of known disposable email providers. Mailboxes created on sandelf.de are designed to be used once and discarded within minutes, which is why they are heavily associated with fake signups, free-trial abuse, and bot activity. We strongly recommend blocking sandelf.de at every signup form with our real-time email verification API, and treating any account created with a sandelf.de address as a fraud signal.
How do I verify if a sandelf.de email address is valid?
The fastest way to verify a sandelf.de email address is to use our free email checker. Enter any @sandelf.de mailbox at the top of this page and our system performs a real-time SMTP handshake against sandelf.de's mail servers, confirming whether the mailbox exists, is reachable, and is safe to send to. No email is ever delivered during the check.
Can I check if a sandelf.de email exists without sending a message?
Yes. Our real-time email verification API connects directly to sandelf.de's mail server, opens an SMTP session, and queries the mailbox using the RCPT TO command without ever transmitting an actual email. The server's response confirms whether the sandelf.de mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for sandelf.de?
sandelf.de currently publishes 1 mail exchange (MX) record. The primary MX is abusekiste.net, which is the first server contacted when other mail systems try to deliver email to a sandelf.de address. The full list with priorities and IP addresses is in the MX Records panel above. MX records tell sending servers where to route email for sandelf.de.
Does sandelf.de use SPF, DKIM, and DMARC email authentication?
sandelf.de has 1 of the 3 standard email authentication records in place: SPF and . Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate sandelf.de mail.
Why do emails to sandelf.de bounce or get blocked?
Mail to sandelf.de bounces because the addresses are throwaway. Even when an inbox technically accepts a message, it expires within minutes and the recipient never reads it. Running your list through our bulk email verifier before a campaign flags every sandelf.de address so you can drop them before they damage the deliverability of the rest of your send.
How can I verify a large list of sandelf.de email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of sandelf.de addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, sandelf.de catch-all detection, role-account detection, and disposable-domain matching. Results typically come back within minutes and previously-failed addresses on your blacklist are reprocessed for free. For continuous high-volume needs, see our unlimited email verification API.
Is it safe to accept signups from sandelf.de email addresses?
No. Anyone signing up to your platform with a @sandelf.de address is almost certainly trying to bypass your verification, abuse a free trial, or hide their identity. Block sandelf.de at the form with our real-time email verification API and treat any historical sandelf.de accounts as fraud-flagged. Real customers do not use sandelf.de for accounts they care about.
What email format does sandelf.de use for usernames?
Most sandelf.de mailboxes follow common patterns like first.last@sandelf.de, firstinitiallast@sandelf.de, or first@sandelf.de, but the actual local-part rules depend on the operator. The only reliable way to confirm whether a specific @sandelf.de address exists is to run it through a free email verification tool. Guessing patterns will produce a high bounce rate and damage your sender reputation.
How is the sandelf.de risk score calculated?
The 0-to-100 risk score for sandelf.de combines disposable-domain classification, mail-server reachability, MX record presence and depth, SPF / DKIM / DMARC enforcement, DMARC policy strength, SMTP banner response, and domain age. Lower scores mean safer to send to. Disposable domains are pinned at the high end of the scale. The sandelf.de score is recomputed on every audit so it always reflects the live state of the domain.
Is sandelf.de a valid email domain?
While sandelf.de may accept mail, it is classified as a disposable/temporary email service. Emails are short-lived and should not be trusted for permanent communication.
Is sandelf.de a disposable or temporary email provider?
Yes, sandelf.de is a known disposable email provider. Addresses are temporary and designed for single-use. Block this domain to prevent fake signups.
What mail server does sandelf.de use?
sandelf.de operates its own temporary mail infrastructure for disposable addresses. Check the MX records section for server details.
Can I send marketing emails to sandelf.de addresses?
No. Disposable domains like sandelf.de provide temporary addresses that expire. Sending marketing emails wastes resources and hurts deliverability metrics.
How do I verify an email address at sandelf.de?
While SMTP verification may return a positive response, sandelf.de addresses should be flagged and rejected. Use BulkEmailChecker to automatically detect disposable domains.