chef.io - Email Domain Verification & Deliverability Report

Active Corporate Email

Organization: Progress Software

Mail Server: Mimecast

Verified 5 days ago

Verify email addresses @chef.io. View MX records, mail server configuration, and authentication status for Progress Software.

Email Verification Tool

LIVE

SMTP Check

Mailbox Detection

Disposable Check

No Email Sent

MX Records for chef.io

Priority	Mail Server	IP Address
10	us-smtp-inbound-1.mimecast.com	`170.10.132.141`
10	us-smtp-inbound-2.mimecast.com	`170.10.132.141`

SMTP Status: Responding

SMTP Banner:

220 us-smtp-inbound-1.mimecast.com ESMTP; Sun, 08 Mar 2026 22:10:22 -0400

chef.io uses Mimecast mail servers, which means emails are processed through Mimecast infrastructure with their built-in spam filtering and security controls.

Email Authentication for chef.io

SPF Record Pass

v=spf1 include:mktomail.com include:stspg-customer.com include:_spf.google.com include:sparkpostmail.com include:amazonses.com include:us._netblocks.mimecast.com -all

Authorized Senders:

mktomail.com stspg-customer.com _spf.google.com sparkpostmail.com amazonses.com us._netblocks.mimecast.com

SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of chef.io.

DMARC Record Quarantine

v=DMARC1; p=quarantine; rua=mailto:c503e53751ee581@rep.dmarcanalyzer.com; ruf=mailto:c503e53751ee581@for.dmarcanalyzer.com; fo=1;

DMARC (Domain-based Message Authentication) tells receiving servers what to do with emails that fail authentication checks.

DKIM Found

DKIM signatures were detected for chef.io, confirming that this domain cryptographically signs outgoing emails.

Authentication Summary: chef.io has full email authentication configured with SPF, DMARC, and DKIM. This provides strong protection against email spoofing and phishing. Emails sent from this domain are well-authenticated and likely to have high deliverability.

WHOIS & Domain Information

Registration Details

Domain: chef.io
TLD: .io
Created: 2011-03-17
Updated: 2025-11-26
Expires: 2026-03-17
Domain Age: 14 years

Registrar

Name: Key-Systems GmbH
IANA ID: 269

Registrant Contact

Name: REDACTED
Organization: Progress Software Corporation
Location: REDACTED, MA, UNITED STATES

Technical Contact

Name: REDACTED
Organization: REDACTED
Location: REDACTED, REDACTED, UNITED STATES

Name Servers

ns-829.awsdns-39.net
ns-1993.awsdns-57.co.uk
ns-1117.awsdns-11.org
ns-92.awsdns-11.com

How to Verify chef.io Email Addresses

Frequently Asked Questions

Is chef.io a valid corporate email domain?

Yes, chef.io is the official corporate email domain for Progress Software. It is used for internal business communications and is not available for public registration.

Is chef.io a disposable or temporary email provider?

No, chef.io is a corporate email domain belonging to Progress Software, used exclusively by employees and authorized personnel.

What mail server does chef.io use?

chef.io uses enterprise-grade mail infrastructure. Check the MX records section above for specific mail server details.

Can I send marketing emails to chef.io addresses?

B2B marketing to chef.io requires proper consent. Corporate domains may use catch-all configurations, so verify individual addresses before sending.

How do I verify an email address at chef.io?

Corporate domains like chef.io may use catch-all configurations. Use BulkEmailChecker's advanced verification to detect catch-all behavior.

How can I verify if an email address at chef.io is valid?

The fastest and most accurate way to verify a chef.io email address is to use BulkEmailChecker's free email verification tool. Simply enter the full email address and our system performs SMTP-level validation by connecting directly to chef.io's mail servers. You'll get instant results showing whether the mailbox exists, is deliverable, and is safe to send to, all without sending a single email.

Can I check if a chef.io email exists without sending an email?

Yes. BulkEmailChecker uses SMTP verification to check if a chef.io mailbox exists without ever delivering an email. Our system connects to the domain's mail server, performs an SMTP handshake, and queries the mail server to confirm whether the recipient address is valid. This process is completely invisible to the email recipient and does not affect your sender reputation.

What happens if I send emails to invalid chef.io addresses?

Sending to invalid email addresses causes hard bounces, which directly damage your sender reputation. Internet Service Providers (ISPs) and email providers track your bounce rate, and if it exceeds 2%, your emails may start landing in spam folders or get blocked entirely. Verifying chef.io addresses with BulkEmailChecker before sending prevents bounces and keeps your deliverability high.

How do I verify a large list of chef.io email addresses?

BulkEmailChecker's bulk verification service lets you upload a CSV or TXT file containing thousands of chef.io email addresses and verify them all at once. Each address goes through 30+ verification checks including syntax validation, DNS/MX lookup, SMTP verification, disposable domain detection, and spam trap identification. Results are typically ready within minutes and can be downloaded as a clean, verified list.

What is email verification and why does it matter?

Email verification is the process of confirming that an email address is real, properly formatted, and capable of receiving messages. It matters because sending to invalid addresses causes bounces, damages your sender reputation, wastes marketing budget, and can get your sending IP blacklisted. BulkEmailChecker verifies addresses at the SMTP level, the most accurate method available, ensuring your emails reach real people.

What are MX records and how do they affect email delivery?

MX (Mail Exchange) records are DNS entries that specify which mail servers are responsible for receiving email for a domain. When you send an email, your mail server looks up the recipient domain's MX records to find where to deliver the message. If a domain has no MX records, it cannot receive email. BulkEmailChecker checks MX records as part of every verification to confirm the domain is configured for email delivery.

What is a catch-all domain and how does it affect verification?

A catch-all (or accept-all) domain is configured to accept email sent to any address at that domain, regardless of whether the specific mailbox exists. This makes it harder to verify individual addresses because the server always responds positively. BulkEmailChecker detects catch-all configurations and flags them in verification results so you can make informed decisions about sending to those addresses.

Can I integrate email verification into my website or application?

Yes. BulkEmailChecker offers a real-time email verification API that you can integrate into signup forms, CRM systems, lead capture tools, and any application that collects email addresses. The API validates addresses at the point of entry, blocking invalid, disposable, and risky emails before they enter your database. Integration takes just a single API call with response times under 3 seconds.

Related Domains

Browse all Corporate Email domains

Need to Verify More @chef.io Emails?

Verify any email address instantly for deliverability, catch-all detection, and inbox verification.

Free @chef.io Checker View Bulk Pricing

No Credit Card Required 99.7% Accuracy Real-time API Available

ISO 27001 Security Certified

SOC 2 Type II Auditor Verified

GDPR Fully Compliant

CCPA Privacy Ready

HIPAA Healthcare Ready

AES-256 Encryption