Domain Intelligence
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Redlands.edu

Safe to Send

Redlands.edu is operated by University of Redlands. The domain runs 1 mail exchange and SMTP is responsive, with all three authentication standards in force.

Safe to Send
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Verify @redlands.edu emails

Live SMTP handshake against redlands.edu mail servers. No email is sent. 10 free per day, no signup.

@redlands.edu
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Plugged the realtime API into our signup form on a Saturday afternoon. Caught 14 disposable domains in the first hour. Setup was honestly easier than the docs implied. Marcus Tanaka · Co-founder, B2B SaaS
SOC 2 Type II GDPR CCPA 99.7% Accuracy
Disposable
No
Persistent addresses, not throwaway
SMTP Live
Yes
Mail server responds to SMTP handshake
MX Records
1
Mail exchangers

Mail Exchange (MX) Records for redlands.edu 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.

1 RECORD
#10
redlands-edu.mail.protection.outlook.com 52.101.40.6
Reachable
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. Responsive
BANNER220 SA2PEPF00003AE8.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Thu, 14 May 2026 02:10:33 +0000 [08DEADB98DFF08BC]
Primary mail server accepted SMTP connection and returned a banner during the live audit.

redlands.edu Email Authentication SPF · DKIM · DMARC

3/3 PASS
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 include:_u.redlands.edu._spf.smart.ondmarc.com -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. Pass
SELECTORDetected via standard selectors
A DKIM signature was detected. Outbound mail from this domain can be cryptographically verified.
DMARC Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject. None
TXTv=DMARC1; p=none; pct=100; sp=none; rua=mailto:e3c03cca@inbox.ondmarc.com,mailto:ee1e4e08@mxtoolbox.dmarc-report.com; ruf=mailto:e3c03cca@inbox.ondmarc.com,mailto:ee1e4e08@forensics.dmarc-report.com; adkim=r; aspf=r; fo=1; rf=afrf; ri=3600
Monitoring only. Receivers take no action when SPF or DKIM fails.

redlands.edu Domain Registration WHOIS · Nameservers · Registrar

28 YEARS OLD
RegisteredJune 23, 1997
Last UpdatedJanuary 15, 2026
ExpiresJuly 31, 2026
Age28 years
TLD.edu
Authoritative Nameservers (4)
  • NS2-04.AZURE-DNS.NET
  • NS1-04.AZURE-DNS.COM
  • NS4-04.AZURE-DNS.INFO
  • NS3-04.AZURE-DNS.ORG
Registrant
University of Redlands
Redlands, CA, UNITED STATES
Technical Contact
Bruce Entwistle Univ of Redlands, Information Technology Services
bruce_entwistle@redlands.edu·Redlands, CA, UNITED STATES·19097488302

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Common Questions About redlands.edu

Is redlands.edu a disposable or temporary email provider?
No. redlands.edu is not a disposable email provider. It is classified as Education Email operated by University of Redlands and addresses on redlands.edu are persistent rather than throwaway. Mail sent to a valid redlands.edu mailbox reaches a real recipient.
How do I verify if a redlands.edu email address is valid?
The fastest way to verify a redlands.edu email address is to use our free email checker. Enter any @redlands.edu mailbox at the top of this page and our system performs a real-time SMTP handshake against redlands.edu'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 redlands.edu email exists without sending a message?
Yes. Our real-time email verification API connects directly to redlands.edu'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 redlands.edu mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for redlands.edu?
redlands.edu currently publishes 1 mail exchange (MX) record. The primary MX is redlands-edu.mail.protection.outlook.com, which is the first server contacted when other mail systems try to deliver email to a redlands.edu 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 redlands.edu.
Does redlands.edu use SPF, DKIM, and DMARC email authentication?
redlands.edu enforces all three email authentication standards: SPF, DKIM, and DMARC (policy: none). This is the gold-standard configuration. It means receivers can verify that mail claiming to come from @redlands.edu is genuine, and redlands.edu's DMARC policy of 'none' instructs receivers how to handle messages that fail those checks.
Why do emails to redlands.edu bounce or get blocked?
Bounces from redlands.edu usually fall into three buckets: the mailbox doesn't exist (5xx user unknown), the inbox is full, or your sending domain isn't authenticated to redlands.edu's satisfaction. The fastest fix is to run each address through a free email verifier before you send, and to make sure your own SPF, DKIM, and DMARC are configured correctly so redlands.edu's receivers trust you.
How can I verify a large list of redlands.edu email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of redlands.edu addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, redlands.edu 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 redlands.edu email addresses?
Yes, with normal hygiene. redlands.edu is a legitimate email service and signups from @redlands.edu behave like any other real user. Pipe each address through a real-time email verifier API at the moment of signup to catch typos and dead mailboxes, but there is no need to block redlands.edu by default.
What email format does redlands.edu use for usernames?
Most redlands.edu mailboxes follow common patterns like first.last@redlands.edu, firstinitiallast@redlands.edu, or first@redlands.edu, but the actual local-part rules depend on University of Redlands. The only reliable way to confirm whether a specific @redlands.edu 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 redlands.edu risk score calculated?
The 0-to-100 risk score for redlands.edu 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 redlands.edu score is recomputed on every audit so it always reflects the live state of the domain.