Domain Intelligence
Last Updated:
Epb.net
Safe to Send
Epb.net is operated by EPB Fiber Optics. The domain runs 2 mail exchanges and SMTP is responsive, with 2 of 3 authentication standards in place.
Safe to Send
RISK
27
/100
Low
Verify Mailbox
Verify @epb.net emails
Live SMTP handshake against epb.net 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
Disposable detection is the strongest I've tested. We were drowning in fake signups before integration. Fraudulent account creation dropped roughly 80% in the first 10 days. Risk score on the lookup pages helps our analysts triage faster too. Elena Reyes · Trust & Safety, Fintech
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
2
Mail exchangers
Mail Exchange (MX) Records for epb.net 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.
#10
us-smtp-inbound-2.mimecast.com 170.10.132.242
Reachable
#10
us-smtp-inbound-1.mimecast.com 170.10.132.242
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 us-smtp-inbound-1.mimecast.com ESMTP; Wed, 13 May 2026 11:10:04 -0400
Primary mail server accepted SMTP connection and returned a banner during the live audit.
epb.net 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 include:amazonses.com include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:207.166.92.11 ip4:207.166.95.11 ip4:52.6.44.126 ip4:52.207.153.36 include:_spf.salesforce.com include:_xnspf.paymentus.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.
Missing
No DKIM signature detected on common selectors for epb.net.
No DKIM signature was detected. Receivers cannot verify the integrity of outbound mail.
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; rua=mailto:1f823cdc7616175@rep.dmarcanalyzer.com; ruf=mailto:1f823cdc7616175@for.dmarcanalyzer.com; sp=reject; fo=1;
Monitoring only. Receivers take no action when SPF or DKIM fails.
epb.net Domain Registration WHOIS · Nameservers · Registrar
RegistrarTUCOWS.COM, CO.
IANA ID69
RegisteredJuly 16, 1997
Last UpdatedApril 16, 2026
ExpiresJuly 15, 2027
Age28 years
TLD.net
Authoritative Nameservers (2)
- ns1.epbinternet.net
- ns2.epbinternet.net
Registrant
Hidden by registrar privacy service
About this Domain
About epb.net
epb.net is the email domain for EPB (Electric Power Board of Chattanooga), a municipal utility providing fiber-optic internet, TV, and electric services in the Chattanooga, Tennessee area. EPB gained international recognition for being one of the first US utilities to offer citywide gigabit fiber internet. Email accounts are provided to EPB internet subscribers.
epb.net supports SPF records for sender authentication. DKIM and DMARC configurations follow standard practices for municipal broadband providers. Proper authentication is recommended for reliable delivery to epb.net mailboxes.
The epb.net mail servers validate recipients during SMTP sessions, rejecting invalid addresses. Standard anti-spam filtering evaluates sender reputation and content quality before accepting messages.
For delivery to epb.net, authenticate with SPF and DKIM, maintain clean lists, and comply with CAN-SPAM. As a municipal fiber provider, EPB monitors complaint rates closely within their community-focused subscriber base.
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Common Questions About epb.net
Is epb.net a disposable or temporary email provider?
No. epb.net is not a disposable email provider. It is classified as ISP Email Provider operated by EPB Fiber Optics and addresses on epb.net are persistent rather than throwaway. Mail sent to a valid epb.net mailbox reaches a real recipient.
How do I verify if a epb.net email address is valid?
The fastest way to verify a epb.net email address is to use our free email checker. Enter any @epb.net mailbox at the top of this page and our system performs a real-time SMTP handshake against epb.net'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 epb.net email exists without sending a message?
Yes. Our real-time email verification API connects directly to epb.net'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 epb.net mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for epb.net?
epb.net currently publishes 2 mail exchange (MX) records. The primary MX is us-smtp-inbound-2.mimecast.com, which is the first server contacted when other mail systems try to deliver email to a epb.net 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 epb.net.
Does epb.net use SPF, DKIM, and DMARC email authentication?
epb.net has 2 of the 3 standard email authentication records in place: SPF, and DMARC (policy: none). Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate epb.net mail.
Why do emails to epb.net bounce or get blocked?
Bounces from epb.net 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 epb.net'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 epb.net's receivers trust you.
How can I verify a large list of epb.net email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of epb.net addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, epb.net 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 epb.net email addresses?
Yes, with normal hygiene. epb.net is a legitimate email service and signups from @epb.net 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 epb.net by default.
What email format does epb.net use for usernames?
Most epb.net mailboxes follow common patterns like first.last@epb.net, firstinitiallast@epb.net, or first@epb.net, but the actual local-part rules depend on EPB Fiber Optics. The only reliable way to confirm whether a specific @epb.net 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 epb.net risk score calculated?
The 0-to-100 risk score for epb.net 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 epb.net score is recomputed on every audit so it always reflects the live state of the domain.
Is epb.net a valid email domain?
Yes, epb.net is a valid email domain operated by EPB (Electric Power Board of Chattanooga), a pioneering municipal fiber internet provider in Chattanooga, Tennessee.
Is epb.net a disposable or temporary email service?
No, epb.net is not a disposable or temporary email service. It is a permanent ISP email domain provided by EPB to its fiber internet subscribers in the Chattanooga area.
What mail servers does epb.net use?
epb.net uses mail servers operated by EPB infrastructure. The MX records direct inbound email to EPB mail gateways for filtering and delivery to subscriber accounts.
Can I send marketing emails to epb.net addresses?
You can send marketing emails to epb.net addresses with valid opt-in consent. Authenticate with SPF and DKIM, comply with CAN-SPAM, and maintain low complaint rates.
How do I verify an epb.net email address?
You can verify an epb.net email address using an email verification tool that checks MX records and performs SMTP-level validation to confirm the mailbox is active and accepting messages.