No threats detected
All checks passed. This site appears legitimate — but always stay alert for phishing even on trusted domains.
Is eur04.safelinks.protection.outlook.com legit or a scam?
eur04.safelinks.protection.outlook.com is an official Microsoft URL-rewriting service for email link protection, not a phishing site.
Analysis Summary
MT Intelligence
The domain is a legitimate Microsoft infrastructure component, confirmed by official Microsoft documentation and security community consensus. Our antivirus network shows zero detections across 92 engines, and the hosting IP has a clean abuse reputation. The domain age of 11,617 days reflects long-established Microsoft infrastructure. The 'eur04' prefix indicates a European data center location used by Safe Links to rewrite URLs in emails before users click them, allowing Microsoft to scan destinations for phishing and malware. Multiple security forums and Microsoft Learn documentation explicitly confirm this is a trustworthy wrapper, even when it appears in suspicious emails — the rewritten link itself is safe, though the original destination may not be. The page currently returns a Bad Request error because direct access to the rewriting service is not intended for end users; this is expected behaviour.
Website Preview
Automated page render — captured in a safe sandbox. What an ordinary visitor would see when loading the site. See full visual analysis →
Visual Screenshot Analysis
We capture a fresh screenshot of the live page and ask a vision model to look for scam visual patterns — fake trust badges, countdown timers, overlay pop-ups, and visual clones of legitimate brands.
Visual red flags detected in the screenshot
The page returned a Bad Request error, providing no meaningful content to assess for scam indicators; visual analysis is inconclusive.
What our vision model saw
1 signalPage renders a 'Bad Request' HTTP error message with no functional content
Web Research Findings
Our live research agent queries scam-report databases, consumer-review sites, news coverage, and general web search for eur04.safelinks.protection.outlook.com, then cross-checks business-registration records and look-alike domain patterns. Everything below is pulled from what it actually found.
- eur04.safelinks.protection.outlook.com is a legitimate Microsoft subdomain used by Safe Links (part of Microsoft Defender for Office 365 / Advanced Outlook.com security) to rewrite and scan URLs in emails for phishing and malware.
- The 'eur04' prefix indicates a European data center location (similar to nam01, gbr01, etc. for other regions).
- Microsoft official documentation confirms that links are wrapped with *.safelinks.protection.outlook.com to check destinations before redirecting users.
- Multiple security forums (StackExchange, university IT pages) explicitly state that safelinks URLs are trustworthy wrappers, even when they appear in scam emails — the original destination may be malicious, but the safelinks domain is not.
- Threat intel sites like AlienVault OTX and CheckPhish list the domain under Microsoft Corporation ownership with no malicious classification found.
- Domain age of 11617 days (~31.8 years) aligns with long-established Microsoft infrastructure.
- No direct scam reports or complaints targeting this exact domain were located; user confusion often stems from the rewritten appearance of links.
- Microsoft Supportopen
"Safelinks are on by default. ... checks whether the links are related to phishing scams or are likely to download viruses or malware"
- Microsoft Learnopen
"Scanned URLs are rewritten or wrapped using the Microsoft standard URL prefix: https://<DataCenterLocation>.safelinks.protection.outlook.com"
- Security StackExchangeopen
".safelinks.protection.outlook.com is directly from Outlook as a way to make links safer. It is not a corporate phishing simulation."
Operated by Microsoft Corporation as part of Microsoft 365 Defender Safe Links feature
eur04.safelinks.protection.outlook.com is confirmed as a legitimate Microsoft subdomain by official Microsoft documentation and security community sources. The domain is used by Safe Links (part of Microsoft Defender for Office 365) to rewrite and scan URLs in emails before users click them. The 'eur04' prefix indicates a European data center location. Multiple security forums and threat-intelligence sources confirm this is a trustworthy wrapper. No scam reports or complaints targeting this domain were found. User confusion sometimes arises because the rewritten link appearance differs from the original destination, but the safelinks domain itself is safe.
Antivirus Engines
Security Scans
Checked against the major public blocklists used by browsers and security tools — no hits.
Domain & Encryption
Server Reputation
Still, stay alert
No major threat indicators — but a clean scan does not guarantee every page is safe, and phishing emails routinely spoof real domains.
- Double-check the exact URL in your address bar
Confirm you are actually on eur04.safelinks.protection.outlook.com and not a lookalike like e-ur04.safelinks.protection.outlook.com.com or an IDN homoglyph.
- Use a password manager
Password managers only auto-fill on the exact domain they were saved for — they refuse to fill lookalike domains, which is the single best phishing defence.
- OpenDiscuss this site on the forum
If you have first-hand experience with this site — good or bad — share it with the MalwareTips community.
Reputation Sources
How this domain rates across independent threat-intelligence and blocklist providers.
Safety FAQ
Common questions about this site, answered directly from the scan data above — so the answers always reflect the latest verdict on this page.
- Our automated security review found no threat indicators on eur04.safelinks.protection.outlook.com. The site appears legitimate based on the signals we checked, but always stay alert for phishing emails that spoof real domains.
- eur04.safelinks.protection.outlook.com passed our automated security checks with a trust score of 93/100. No antivirus engines or major blacklists flagged the site at the time of the last scan.
- Yes. eur04.safelinks.protection.outlook.com presents a valid TLSv1.3 certificate issued by Microsoft Corporation · Microsoft TLS G2 RSA CA OCSP 04, expiring in 171 days. Note that SSL only encrypts the connection — it does not guarantee that the site itself is trustworthy.
- eur04.safelinks.protection.outlook.com is 31.8 years old, registered on 8/18/1994 through MarkMonitor Inc.. Scam domains are often freshly registered — a site under 6 months old warrants extra caution.
- No. All 92 antivirus engines in our malware network report eur04.safelinks.protection.outlook.com as clean.
- No. eur04.safelinks.protection.outlook.com is not currently listed on the major browser blocklist feeds that modern browsers use.
- eur04.safelinks.protection.outlook.com resolves to an IP operated by Microsoft Corporation in US (usage type: Data Center/Web Hosting/Transit). Hosting location alone doesn't make a site good or bad, but unusual geography for a brand's claimed country is one of many signals we weigh.
- We cache results for 24 hours. Signed-in MalwareTips members can trigger a manual rescan at any time using the "Rescan" button on the report page, which re-runs every check from scratch and refreshes this page.
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