caiway.nl - Email Domain Verification & Deliverability Report

Active ISP Email Provider
Organization: Caiway
Mail Server: caiway.net
Verified 1 days ago

Real-time verification data for caiway.nl. View MX records, SPF/DKIM/DMARC authentication, and server deliverability status.

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MX Records for caiway.nl

PriorityMail ServerIP Address
10 mx1.caiway.net 217.102.255.219
20 mx2.caiway.net 217.102.255.239
30 mx3.caiway.net 217.102.255.240
40 mx4.caiway.net 217.102.255.251
SMTP Status: Responding
SMTP Banner:
220 spamfilter17.delta.nl ESMTP Exim 20260303.1001 Wed, 11 Mar 2026 08:11:19 +0100

caiway.nl uses caiway.net mail servers, which means emails are processed through caiway.net infrastructure with their built-in spam filtering and security controls.

Email Authentication for caiway.nl

SPF Record Pass

v=spf1 include:_spf.dfn.nl include:_senderspf.copernica.com include:spf.mandrillapp.com include:_spf.mailplus.nl include:_spf.megamail.nl include:servers.mcsv.net include:mailgun.org -all
Authorized Senders:
_spf.dfn.nl _senderspf.copernica.com spf.mandrillapp.com _spf.mailplus.nl _spf.megamail.nl servers.mcsv.net mailgun.org

SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of caiway.nl.

DMARC Record None

v=DMARC1; p=none

DMARC (Domain-based Message Authentication) tells receiving servers what to do with emails that fail authentication checks.

DKIM Found

DKIM signatures were detected for caiway.nl, confirming that this domain cryptographically signs outgoing emails.

Authentication Summary: caiway.nl has full email authentication configured with SPF, DMARC, and DKIM. This provides strong protection against email spoofing and phishing. Emails sent from this domain are well-authenticated and likely to have high deliverability.

WHOIS & Domain Information

Registration Details

Domain
caiway.nl
TLD
.nl
Created
2003-08-26
Updated
2025-12-02
Domain Age
22 years

Registrar

Name
DELTA Fiber Nederland B.V.
IANA ID
2333

Name Servers

  • ns2.dfn.nl
  • ns1.dfn.nl

About caiway.nl

caiway.nl is the email domain for Caiway, a Dutch cable and internet service provider. Caiway provides broadband internet, cable TV, and telephone services to customers in the Netherlands, offering email accounts to subscribers through the caiway.nl domain. Caiway is now part of the DELTA Fiber group.

caiway.nl supports SPF records for sender authentication. DKIM and DMARC configurations follow standard Dutch ISP practices. Senders should align SPF and DKIM for reliable delivery to caiway.nl mailboxes.

The caiway.nl mail servers validate recipients at the SMTP level, rejecting invalid addresses. Dutch ISP mail systems apply reputation-based filtering, content analysis, and authentication checks. Messages from unfamiliar senders may face additional scrutiny.

For delivery to caiway.nl, authenticate with SPF and DKIM, maintain clean subscriber lists, and comply with Dutch telecommunications law (Tw) and GDPR requirements for commercial email communications.

How to Verify caiway.nl Email Addresses

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Verify caiway.nl Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates caiway.nl email addresses at the point of entry, blocking invalid, disposable, and risky addresses before they enter your database. Integrate with a single API call and prevent bad data at the source.

Frequently Asked Questions

Yes, caiway.nl is a valid email domain operated by Caiway, a Dutch cable and internet provider now part of the DELTA Fiber group. Email accounts are provided to Caiway broadband subscribers.
No, caiway.nl is not a disposable or temporary email service. It is a permanent ISP email domain provided by Caiway to its internet subscribers in the Netherlands.
caiway.nl uses mail servers managed by Caiway/DELTA Fiber infrastructure in the Netherlands. The MX records direct inbound email to their mail gateways for filtering and delivery to subscriber mailboxes.
You can send marketing emails to caiway.nl addresses with proper opt-in consent. Authenticate with SPF and DKIM, comply with Dutch telecom law and GDPR, and honor unsubscribe requests promptly.
You can verify a caiway.nl email address using an email verification service that checks MX records and performs SMTP-level mailbox validation to confirm the address is active and accepting messages.
The fastest and most accurate way to verify a caiway.nl email address is to use BulkEmailChecker's free email verification tool. Simply enter the full email address and our system performs SMTP-level validation by connecting directly to caiway.nl's mail servers. You'll get instant results showing whether the mailbox exists, is deliverable, and is safe to send to, all without sending a single email.
Yes. BulkEmailChecker uses SMTP verification to check if a caiway.nl mailbox exists without ever delivering an email. Our system connects to the domain's mail server, performs an SMTP handshake, and queries the mail server to confirm whether the recipient address is valid. This process is completely invisible to the email recipient and does not affect your sender reputation.
Sending to invalid email addresses causes hard bounces, which directly damage your sender reputation. Internet Service Providers (ISPs) and email providers track your bounce rate, and if it exceeds 2%, your emails may start landing in spam folders or get blocked entirely. Verifying caiway.nl addresses with BulkEmailChecker before sending prevents bounces and keeps your deliverability high.
BulkEmailChecker's bulk verification service lets you upload a CSV or TXT file containing thousands of caiway.nl email addresses and verify them all at once. Each address goes through 30+ verification checks including syntax validation, DNS/MX lookup, SMTP verification, disposable domain detection, and spam trap identification. Results are typically ready within minutes and can be downloaded as a clean, verified list.
Email verification is the process of confirming that an email address is real, properly formatted, and capable of receiving messages. It matters because sending to invalid addresses causes bounces, damages your sender reputation, wastes marketing budget, and can get your sending IP blacklisted. BulkEmailChecker verifies addresses at the SMTP level, the most accurate method available, ensuring your emails reach real people.
MX (Mail Exchange) records are DNS entries that specify which mail servers are responsible for receiving email for a domain. When you send an email, your mail server looks up the recipient domain's MX records to find where to deliver the message. If a domain has no MX records, it cannot receive email. BulkEmailChecker checks MX records as part of every verification to confirm the domain is configured for email delivery.
A catch-all (or accept-all) domain is configured to accept email sent to any address at that domain, regardless of whether the specific mailbox exists. This makes it harder to verify individual addresses because the server always responds positively. BulkEmailChecker detects catch-all configurations and flags them in verification results so you can make informed decisions about sending to those addresses.
Yes. BulkEmailChecker offers a real-time email verification API that you can integrate into signup forms, CRM systems, lead capture tools, and any application that collects email addresses. The API validates addresses at the point of entry, blocking invalid, disposable, and risky emails before they enter your database. Integration takes just a single API call with response times under 3 seconds.

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