cod.edu - Email Domain Verification & Deliverability Report

Active Education Email
Organization: College of DuPage
Mail Server: cod.edu
Verified 1 days ago

Verify email addresses @cod.edu. View MX records, mail server configuration, and authentication status for College of DuPage.

Email Verification Tool
LIVE
SMTP Check
Mailbox Detection
Disposable Check
No Email Sent

MX Records for cod.edu

PriorityMail ServerIP Address
0 fortimail.cod.edu 192.203.136.203
SMTP Status: Responding
SMTP Banner:
220 fortimail.cod.edu ESMTP Smtpd; Wed, 4 Mar 2026 08:10:54 -0600

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

Email Authentication for cod.edu

SPF Record Pass

v=spf1 ip4:192.203.136.203 ip4:192.203.136.94 ip4:208.76.56.0/21 ip4:216.146.32.0/20 ip4:80.231.25.0/24 ip4:80.231.219.0/24 ip4:103.11.200.0/22 ip4:199.19.0.0/21 ip4:204.13.248.0/22 ip4:208.78.68.0/22 ip4:162.88.36.0/23 ip4:162.88.4.0/23 ip4:162.88.24.0/24 ip4:162.88.28.0/24 ip4:208.117.49.214 ip4:52.5.236.246 ip4:50.112.114.135 ip4:54.163.226.88 ip4:54.204.25.186 ip4:198.187.196.100 ip4:209.102.220.0/22 ip4:216.32.146.0/23 ip4:206.16.207.0/24 ip4:209.222.82.0/24 ip4:54.173.229.38 ip4:52.0.20.102 ip4:54.174.116.32 ip4:52.2.238.96 ip4:52.20.146.34 ip4:34.198.122.65 ip4:52.3.209.175 ip4:35.168.237.202 ip4:38.127.225.55 ip4:38.127.225.67 ip4:38.127.225.237 ip4:54.159.152.28 ip4:3.220.127.182 ip4:54.79.247.103 ip4:34.198.24.3 ip4:209.11.223.142 ip4:184.106.13.89 ip4:52.42.205.164 ip4:13.56.61.123 ip4:34.230.162.194 ip4:192.174.90.242 ip4:63.32.233.163 ip4:13.237.211.159 ip4:35.182.61.240 ip4:3.216.118.133 ip4:3.228.38.108 ip4:3.17.232.9 ip4:3.128.220.127 ip4:3.128.236.80 ip4:3.139.232.78 ip4:3.223.100.88 ip4:34.200.182.36 ip4:54.151.112.86 ip4:50.18.89.44 ip4:54.214.32.131 ip4:52.35.81.117 ip4:69.196.241.0/24 ip4:69.196.242.128/28 ip4:192.230.230.0/25 ip4:37.216.222.128/28 ip4:69.196.238.0/28 ip4:192.230.237.0/24 ip4:192.230.238.0/24 ip4:54.85.76.43 ip4:34.197.133.25 ip4:23.22.228.238 ip4:34.198.69.238 ip4:54.85.61.20 ip4:34.194.81.60 ip4:34.198.106.176 ip4:34.198.69.122 ip4:54.197.63.203 ip4:54.82.255.166 ip4:52.206.75.63 ip4:52.204.31.221 ip4:35.168.199.206 ip4:34.231.156.186 ip4:205.139.104.0/22 ip4:216.235.196.0/22 ip4:216.235.200.0/21 ip4:206.79.6.0/24 ip4:216.235.195.0/24 ip4:205.139.105.48/29 ip4:206.79.6.128/26 ip4:208.40.241.140/30 ip4:216.37.18.6 ip4:204.8.10.114 ip4:216.235.197.198 ip4:64.209.141.221 ip4:208.185.229.45 ip4:167.89.66.128 ip4:167.89.86.154 ip4:52.210.155.131 ip4:34.194.230.233 ip4:34.230.107.215 ip4:34.250.203.24 ip4:34.250.117.27 ip4:52.62.198.211 ip4:52.60.116.9 ip4:52.60.157.49 ip4:150.230.240.226 ip4:52.70.104.58 ip4:35.174.117.211 ip4:168.245.29.173 ip4:52.86.177.169 ip4:51.112.32.123 ip4:3.28.77.232 ip4:69.167.165.190 ip4:52.25.101.79 ip4:103.151.192.0/23 ip4:185.12.80.0/22 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:216.198.0.0/18 ip4:192.203.136.32 ip4:35.80.141.6 ip4:44.229.121.55 ip4:148.59.100.16/28 include:spf.protection.outlook.com include:amazonses.com include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com include:5367455.spf06.hubspotemail.net ~all
Authorized Senders:
spf.protection.outlook.com amazonses.com _netblocks.google.com _netblocks2.google.com _netblocks3.google.com 5367455.spf06.hubspotemail.net

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

DMARC Record None

v=DMARC1; p=none; rua=mailto:exadmin@cod.edu; ruf=mailto:caltest@cod.edu

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

DKIM Found

DKIM signatures were detected for cod.edu, confirming that this domain cryptographically signs outgoing emails.

Authentication Summary: cod.edu 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
cod.edu
TLD
.edu
Created
1993-03-22
Updated
2025-06-03
Expires
2028-07-31
Domain Age
32 years

Registrar

Registrant Contact

Name
College of duPage
Location
Glen Ellyn, IL, UNITED STATES

Technical Contact

Name
Dave Bukowski College of DuPage
Location
Glen Ellen, IL, UNITED STATES

Name Servers

  • NS3.COD.EDU
  • RS6000.COD.EDU
  • NS1.COD.EDU

How to Verify cod.edu Email Addresses

Need to check if an email address at cod.edu actually exists before you send to it? BulkEmailChecker performs deep SMTP-level validation, connecting directly to cod.edu's mail servers to confirm the mailbox is real, active, and able to receive your message. No test email is ever sent, so your sender reputation stays protected.

Verify a Single cod.edu Email
Use BulkEmailChecker's free email verification tool to instantly validate any cod.edu address. You'll get a complete deliverability report including mailbox existence, catch-all detection, disposable domain flagging, and risk scoring, all in under 3 seconds.

Verify a List of cod.edu Emails in Bulk
Have a mailing list full of cod.edu addresses? Upload your CSV or TXT file to BulkEmailChecker and verify thousands of email addresses in minutes. Our bulk verification engine runs 30+ checks per address including syntax validation, DNS resolution, SMTP handshake, and spam trap detection. Clean your list before every campaign to keep bounce rates below 2% and protect your sender score. See bulk pricing.

Verify cod.edu Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates cod.edu email addresses at the point of entry, blocking invalid, disposable, and risky addresses before they enter your database. Integrate with a single API call and prevent bad data at the source.

Frequently Asked Questions

The fastest and most accurate way to verify a cod.edu 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 cod.edu'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.
Yes. BulkEmailChecker uses SMTP verification to check if a cod.edu 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.
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 cod.edu addresses with BulkEmailChecker before sending prevents bounces and keeps your deliverability high.
BulkEmailChecker's bulk verification service lets you upload a CSV or TXT file containing thousands of cod.edu 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.
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.
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.
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.
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

asu.edu
Arizona State University
education
morainevalley.edu
Moraine Valley Community College
education
benedict.edu
Benedict College
education
olin.edu
Olin College of Engineering
education
sheffield.ac.uk
University of Sheffield
education
uco.edu
University of Central Oklahoma
education
vt.edu
Virginia Tech
education
mga.edu
Middle Georgia State University
education
Browse all Education Email domains

Need to Verify More @cod.edu Emails?

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

Free @cod.edu 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