Domain Intelligence
Last Updated:
Assumption.edu
Safe to Send
Assumption.edu is operated by Assumption University. The domain runs 1 mail exchange and SMTP is responsive, with all three authentication standards in force.
Safe to Send
RISK
15
/100
Low
Verify Mailbox
Verify @assumption.edu emails
Live SMTP handshake against assumption.edu mail servers. No email is sent. 10 free per day, no signup.
Trusted by 400,000+ senders
4.9/5
From 8,500+ verified reviews
Switched after a billing dispute with NeverBounce. Same SMTP results on a 5k test sample. The MX, SPF, DKIM lookup tools are a hidden value-add for debugging client deliverability complaints. James Wexler · Growth Engineer
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 assumption.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.
#0
assumption-edu.mail.protection.outlook.com 52.101.10.5
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 BL02EPF0001A101.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Thu, 14 May 2026 02:10:24 +0000 [08DEADC1553627C6]
Primary mail server accepted SMTP connection and returned a banner during the live audit.
assumption.edu 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 ip4:192.80.61.11 ip4:34.194.230.233 ip4:34.230.107.215 ip4:38.106.32.22 ip4:38.106.32.46 ip4:216.69.109.5 ip4:216.69.103.84 ip4:104.18.147.7 ip4:104.18.151.7 ip4:104.18.149.7 ip4:104.18.150.7 ip4:104.18.148.7 ip4:50.31.46.51 ip4:159.183.222.112 ip6:2606:4700::6812:9407 ip6:2606:4700::6812:9507 ip6:2606:4700::6812:9607 ip6:2606:4700::6812:9307 ip6:2606:4700::6812:9707 ip4:52.60.47.182 ip4:99.79.94.115 ip4:206.107.42.18 ip4:206.107.42.18 ip4:206.107.43.18 ip4:104.196.171.202 ip4:208.86.168.7 ip4:135.84.68.123 ip4:206.152.14.54 ip4:135.84.79.54 ip4:35.174.44.16 ip4:34.237.49.61 ip4:54.234.244.164 ip4:34.236.112.77 ip4:34.233.81.52 ip4:54.156.205.252 ip4:64.74.237.230/31 ip4:216.147.212.20/30 include:spf.protection.outlook.com include:spf.topdesk.net include:a._spf.brightspace.com include:spf.constantcontact.com include:sendgrid.net include:_spf.explore-blue.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.
Quarantine
TXTv=DMARC1; p=quarantine; pct=100; rua=mailto:postmaster@assumption.edu
Receivers are instructed to quarantine (route to spam) any mail that fails SPF or DKIM.
assumption.edu Domain Registration WHOIS · Nameservers · Registrar
RegisteredJuly 26, 1991
Last UpdatedJanuary 28, 2025
ExpiresJuly 31, 2027
Age34 years
TLD.edu
Authoritative Nameservers (4)
- NS3-08.AZURE-DNS.ORG
- NS2-08.AZURE-DNS.NET
- NS1-08.AZURE-DNS.COM
- NS4-08.AZURE-DNS.INFO
Registrant
Assumption College
Worcester, MA, UNITED STATES
Technical Contact
Benjamin Goodwin
Assumption University
Information Technology
bgoodwin@assumption.edu·Worcester, MA, UNITED STATES·15087677596
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More Email Verification Tools
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Common Questions About assumption.edu
Is assumption.edu a disposable or temporary email provider?
No. assumption.edu is not a disposable email provider. It is classified as Education Email operated by Assumption University and addresses on assumption.edu are persistent rather than throwaway. Mail sent to a valid assumption.edu mailbox reaches a real recipient.
How do I verify if a assumption.edu email address is valid?
The fastest way to verify a assumption.edu email address is to use our free email checker. Enter any @assumption.edu mailbox at the top of this page and our system performs a real-time SMTP handshake against assumption.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 assumption.edu email exists without sending a message?
Yes. Our real-time email verification API connects directly to assumption.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 assumption.edu mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for assumption.edu?
assumption.edu currently publishes 1 mail exchange (MX) record. The primary MX is assumption-edu.mail.protection.outlook.com, which is the first server contacted when other mail systems try to deliver email to a assumption.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 assumption.edu.
Does assumption.edu use SPF, DKIM, and DMARC email authentication?
assumption.edu enforces all three email authentication standards: SPF, DKIM, and DMARC (policy: quarantine). This is the gold-standard configuration. It means receivers can verify that mail claiming to come from @assumption.edu is genuine, and assumption.edu's DMARC policy of 'quarantine' instructs receivers how to handle messages that fail those checks.
Why do emails to assumption.edu bounce or get blocked?
Bounces from assumption.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 assumption.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 assumption.edu's receivers trust you.
How can I verify a large list of assumption.edu email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of assumption.edu addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, assumption.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 assumption.edu email addresses?
Yes, with normal hygiene. assumption.edu is a legitimate email service and signups from @assumption.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 assumption.edu by default.
What email format does assumption.edu use for usernames?
Most assumption.edu mailboxes follow common patterns like first.last@assumption.edu, firstinitiallast@assumption.edu, or first@assumption.edu, but the actual local-part rules depend on Assumption University. The only reliable way to confirm whether a specific @assumption.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 assumption.edu risk score calculated?
The 0-to-100 risk score for assumption.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 assumption.edu score is recomputed on every audit so it always reflects the live state of the domain.