Domain Intelligence
Last Updated:

Illinois.gov

Safe to Send

Illinois.gov is operated by State of Illinois. The domain runs 4 mail exchanges and SMTP is responsive, with all three authentication standards in force.

Safe to Send
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Verify @illinois.gov emails

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

@illinois.gov
No email sent No signup Real-time SMTP

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We had a sender reputation crisis after a list import went badly. Used the bulk verifier to scrub everything, then plugged the API into our signup form. Took deliverability from 73% to 96% over six weeks. Sarah Knowles · Email Marketing Lead
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
4
Mail exchangers

Mail Exchange (MX) Records for illinois.gov 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.

4 RECORDS
#10
smtpin06.illinois.gov 216.124.56.101
Reachable
#10
smtpin07.illinois.gov 216.124.56.103
Reachable
#10
smtpin01.illinois.gov 216.124.52.101
Reachable
#10
smtpin02.illinois.gov 216.124.52.103
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 smtpin06.illinois.gov ESMTP
Primary mail server accepted SMTP connection and returned a banner during the live audit.

illinois.gov 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 ip4:216.124.52.100/30 ip4:216.124.52.104/31 ip4:216.124.56.100/30 ip4:216.124.54.33 ip4:216.124.54.34 ip4:216.124.54.74/31 ip4:216.124.52.108 ip4:216.124.56.108 include:spf-a.illinois.gov include:spf-b.illinois.gov ~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; sp=none; rua=mailto:f6956c82@mxtoolbox.dmarc-report.com; ruf=mailto:f6956c82@forensics.dmarc-report.com; rf=afrf; pct=75; ri=86400
Receivers are instructed to quarantine (route to spam) any mail that fails SPF or DKIM.

illinois.gov Domain Registration WHOIS · Nameservers · Registrar

23 YEARS OLD
Registrarget.gov
IANA ID93
RegisteredDecember 6, 2002
Last UpdatedSeptember 21, 2025
ExpiresSeptember 16, 2026
Age23 years
TLD.gov
Authoritative Nameservers (2)
  • ns1.state.il.us
  • ns2.state.il.us
Registrant
Hidden by registrar privacy service
Technical Contact
Hidden by registrar privacy service
About this Domain

About illinois.gov

The illinois.gov domain is the official website of the State of Illinois, used by state government agencies, departments, and offices. Illinois, with its capital in Springfield, administers public services including healthcare, education, transportation, and revenue collection for nearly 13 million residents.

Illinois state government domains implement email authentication with SPF, DKIM, and DMARC. The state's Department of Innovation and Technology oversees cybersecurity standards for state communications.

Illinois state mail servers do not operate as catch-all. Recipients are validated and invalid addresses rejected. State government email systems employ standard security filtering.

Reliable delivery to illinois.gov requires authentication compliance with SPF, DKIM, and DMARC.

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Common Questions About illinois.gov

Is illinois.gov a disposable or temporary email provider?
No. illinois.gov is not a disposable email provider. It is classified as Government Email operated by State of Illinois and addresses on illinois.gov are persistent rather than throwaway. Mail sent to a valid illinois.gov mailbox reaches a real recipient.
How do I verify if a illinois.gov email address is valid?
The fastest way to verify a illinois.gov email address is to use our free email checker. Enter any @illinois.gov mailbox at the top of this page and our system performs a real-time SMTP handshake against illinois.gov'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 illinois.gov email exists without sending a message?
Yes. Our real-time email verification API connects directly to illinois.gov'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 illinois.gov mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for illinois.gov?
illinois.gov currently publishes 4 mail exchange (MX) records. The primary MX is smtpin06.illinois.gov, which is the first server contacted when other mail systems try to deliver email to a illinois.gov 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 illinois.gov.
Does illinois.gov use SPF, DKIM, and DMARC email authentication?
illinois.gov 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 @illinois.gov is genuine, and illinois.gov's DMARC policy of 'quarantine' instructs receivers how to handle messages that fail those checks.
Why do emails to illinois.gov bounce or get blocked?
Bounces from illinois.gov 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 illinois.gov'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 illinois.gov's receivers trust you.
How can I verify a large list of illinois.gov email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of illinois.gov addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, illinois.gov 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 illinois.gov email addresses?
Yes, with normal hygiene. illinois.gov is a legitimate email service and signups from @illinois.gov 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 illinois.gov by default.
What email format does illinois.gov use for usernames?
Most illinois.gov mailboxes follow common patterns like first.last@illinois.gov, firstinitiallast@illinois.gov, or first@illinois.gov, but the actual local-part rules depend on State of Illinois. The only reliable way to confirm whether a specific @illinois.gov 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 illinois.gov risk score calculated?
The 0-to-100 risk score for illinois.gov 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 illinois.gov score is recomputed on every audit so it always reflects the live state of the domain.
Is illinois.gov a valid government email domain?
Yes, illinois.gov is a valid official government email domain operated by State of Illinois. It is used by government employees and officials for official correspondence.
Is illinois.gov a disposable or temporary email provider?
No, illinois.gov is not a disposable or temporary email provider. It is an official government domain used for legitimate government communications and operations.
What mail server does illinois.gov use?
illinois.gov uses mail servers managed by State of Illinois. Check the MX records section above for specific server details and authentication configuration.
Can I send emails to illinois.gov addresses?
Yes, illinois.gov addresses accept incoming email. Government mail servers typically enforce strict spam filtering, authentication checks (SPF, DKIM, DMARC), and content scanning. Ensure your sending domain is properly authenticated.
How do I verify an email address at illinois.gov?
Use BulkEmailChecker to verify illinois.gov addresses. Government domains may have specific SMTP behaviors including greylisting and strict rate limiting. Our tool handles these provider-specific configurations automatically.