hotmail.co.uk - Email Domain Verification & Deliverability Report

Active Free Email Provider
Organization: Microsoft Corporation
Mail Server: Microsoft 365
Verified 2 days ago

Real-time verification data for Microsoft Corporation (hotmail.co.uk). A Free Email Provider .

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MX Records for hotmail.co.uk

PriorityMail ServerIP Address
10 eur.olc.protection.outlook.com 52.101.68.17
SMTP Status: Responding
SMTP Banner:
220 DB1PEPF00039230.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Fri, 13 Mar 2026 03:10:46 +0000 [08DE79CF11A84D0B]

hotmail.co.uk uses Microsoft 365 mail servers, which means emails are processed through Microsoft 365 infrastructure with their built-in spam filtering and security controls.

Email Authentication for hotmail.co.uk

SPF Record Pass

v=spf1 include:spf2.outlook.com ~all
Authorized Senders:
spf2.outlook.com

SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of hotmail.co.uk.

DMARC Record None

v=DMARC1; p=none; rua=mailto:rua@dmarc.microsoft;ruf=mailto:ruf@dmarc.microsoft;fo=1:s:d

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

DKIM Found

DKIM signatures were detected for hotmail.co.uk, confirming that this domain cryptographically signs outgoing emails.

Authentication Summary: hotmail.co.uk 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
hotmail.co.uk
TLD
.co.uk
Created
2003-10-23
Updated
2025-10-19
Expires
2026-10-23
Domain Age
22 years

Registrar

Name
CSC Corporate Domains, Inc [Tag = CSC-CORP-DOMAINS]
IANA ID
299

Name Servers

  • ns1-06.azure-dns.com
  • ns2-06.azure-dns.net
  • ns3-06.azure-dns.org
  • ns4-06.azure-dns.info

About hotmail.co.uk Email Verification

hotmail.co.uk is the United Kingdom variant of Microsoft's Hotmail, now part of Outlook.com. One of the most widely used email domains in the UK, this was the default for British Hotmail registrations. Existing addresses continue through Microsoft's Exchange Online infrastructure.

hotmail.co.uk benefits from Microsoft's full authentication with SPF, DKIM, and DMARC enforcement. Exchange Online Protection provides advanced threat detection. The service complies with UK GDPR.

The hotmail.co.uk mail servers validate recipients and reject invalid mailboxes. The domain does not operate as catch-all. Microsoft applies consistent rate management across all regional domains.

Delivering to hotmail.co.uk follows Microsoft's standard practices. Authenticate with SPF, DKIM, and DMARC. Enroll in SNDS for monitoring and follow UK email marketing regulations.

How to Verify hotmail.co.uk Email Addresses

Need to check if an email address at hotmail.co.uk actually exists before you send to it? BulkEmailChecker performs deep SMTP-level validation, connecting directly to hotmail.co.uk's mail servers to confirm the mailbox is real, active, and able to receive your message. No test email is ever sent, so your sender reputation stays protected.

Verify a Single hotmail.co.uk Email
Use BulkEmailChecker's free email verification tool to instantly validate any hotmail.co.uk address. You'll get a complete deliverability report including mailbox existence, catch-all detection, disposable domain flagging, and risk scoring, all in under 3 seconds.

Verify a List of hotmail.co.uk Emails in Bulk
Have a mailing list full of hotmail.co.uk addresses? Upload your CSV or TXT file to BulkEmailChecker and verify thousands of email addresses in minutes. Our bulk verification engine runs 30+ checks per address including syntax validation, DNS resolution, SMTP handshake, and spam trap detection. Clean your list before every campaign to keep bounce rates below 2% and protect your sender score. See bulk pricing.

Verify hotmail.co.uk Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates hotmail.co.uk 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, hotmail.co.uk is a valid email domain operated by Microsoft for UK Hotmail users, now running on Outlook.com infrastructure.
No, hotmail.co.uk is a permanent legacy Microsoft email domain for UK users.
Hotmail.co.uk uses Microsoft's Exchange Online Protection, shared with all Microsoft consumer email domains.
Yes, with consent. Microsoft's spam filtering and GDPR regulations apply.
Hotmail.co.uk addresses are verified via SMTP through Microsoft's infrastructure with standard rate limiting.
The fastest and most accurate way to verify a hotmail.co.uk 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 hotmail.co.uk'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 hotmail.co.uk 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 hotmail.co.uk 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 hotmail.co.uk 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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