Domain Intelligence
Last Updated:
Gov.br
Proceed With Care
Gov.br is operated by Government of Brazil. The domain runs 1 mail exchange and SMTP is not currently responding, with 1 of 3 authentication standards in place.
Proceed With Care
RISK
53
/100
Medium
Verify Mailbox
Verify @gov.br emails
Live SMTP handshake against gov.br mail servers. No email is sent. 10 free per day, no signup.
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4.9/5
From 8,500+ verified reviews
Catch-all detection alone has paid for the subscription. We were hemorrhaging credits at our previous verifier on catch-all domains that accepted the call but never bounced. Saved roughly $400 per month overnight. Brett Anderson · RevOps Manager
SOC 2 Type II
GDPR
CCPA
99.7% Accuracy
Disposable
No
Persistent addresses, not throwaway
SMTP Live
No
Mail server not responding to SMTP
MX Records
1
Mail exchangers
Mail Exchange (MX) Records for gov.br 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
No Response
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.
No Response
BANNER220 gov.br ESMTP Service Ready
Primary mail server did not respond to SMTP within the audit timeout. Mail to gov.br may bounce.
gov.br 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 -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 gov.br.
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.
Missing
No DMARC record published at _dmarc.gov.br.
No DMARC policy is published. Receivers have no instruction for handling failed messages from this domain.
About this Domain
About gov.br
The gov.br domain is the official government domain for Brazil, used by the federal government, ministries, and public agencies. Brazil's government, based in Brasilia, administers public services including healthcare (SUS), education, social welfare, and public security for one of the world's largest nations.
Brazilian government domains under gov.br implement email authentication including SPF, DKIM, and DMARC. Brazil's national cybersecurity efforts have promoted email security across government infrastructure. Phishing impersonating Brazilian agencies targets citizens seeking tax (Receita Federal) and social services.
Brazilian government mail servers do not operate as catch-all. The SMTP infrastructure validates recipients and rejects invalid addresses. Government systems employ rate limiting and filtering.
Reliable delivery to gov.br requires authentication compliance. Brazilian government gateways apply content filtering and sender analysis.
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More Email Verification Tools
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Common Questions About gov.br
Is gov.br a disposable or temporary email provider?
No. gov.br is not a disposable email provider. It is classified as Government Email operated by Government of Brazil and addresses on gov.br are persistent rather than throwaway. Mail sent to a valid gov.br mailbox reaches a real recipient.
How do I verify if a gov.br email address is valid?
The fastest way to verify a gov.br email address is to use our free email checker. Enter any @gov.br mailbox at the top of this page and our system performs a real-time SMTP handshake against gov.br'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 gov.br email exists without sending a message?
Yes. Our real-time email verification API connects directly to gov.br'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 gov.br mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for gov.br?
gov.br currently publishes 1 mail exchange (MX) record. The primary MX is , which is the first server contacted when other mail systems try to deliver email to a gov.br 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 gov.br.
Does gov.br use SPF, DKIM, and DMARC email authentication?
gov.br has 1 of the 3 standard email authentication records in place: SPF and . Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate gov.br mail.
Why do emails to gov.br bounce or get blocked?
Bounces from gov.br 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 gov.br'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 gov.br's receivers trust you.
How can I verify a large list of gov.br email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of gov.br addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, gov.br 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 gov.br email addresses?
Yes, with normal hygiene. gov.br is a legitimate email service and signups from @gov.br 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 gov.br by default.
What email format does gov.br use for usernames?
Most gov.br mailboxes follow common patterns like first.last@gov.br, firstinitiallast@gov.br, or first@gov.br, but the actual local-part rules depend on Government of Brazil. The only reliable way to confirm whether a specific @gov.br 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 gov.br risk score calculated?
The 0-to-100 risk score for gov.br 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 gov.br score is recomputed on every audit so it always reflects the live state of the domain.
Is gov.br a valid government email domain?
Yes, gov.br is a valid official government email domain operated by Government of Brazil. It is used by government employees and officials for official correspondence.
Is gov.br a disposable or temporary email provider?
No, gov.br 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 gov.br use?
gov.br uses mail servers managed by Government of Brazil. Check the MX records section above for specific server details and authentication configuration.
Can I send emails to gov.br addresses?
Yes, gov.br 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 gov.br?
Use BulkEmailChecker to verify gov.br addresses. Government domains may have specific SMTP behaviors including greylisting and strict rate limiting. Our tool handles these provider-specific configurations automatically.