repligen.com - Email Domain Verification & Deliverability Report

Active Corporate Email
Organization: Repligen Corporation
Mail Server: Mimecast
Verified 4 days ago

Verify email addresses @repligen.com. View MX records, mail server configuration, and authentication status for Repligen Corporation.

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MX Records for repligen.com

PriorityMail ServerIP 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; Mon, 02 Mar 2026 04:10:38 -0500

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

Email Authentication for repligen.com

SPF Record Pass

v=spf1 redirect=9kf4psle._spf._d.mim.ec

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

DMARC Record Reject

v=DMARC1; p=reject; rua=mailto:384f529dec50062@rep.dmarcanalyzer.com; ruf=mailto:384f529dec50062@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 repligen.com, confirming that this domain cryptographically signs outgoing emails.

Authentication Summary: repligen.com 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
repligen.com
TLD
.com
Created
1995-11-10
Updated
2024-11-11
Expires
2029-11-09
Domain Age
30 years

Registrar

Name
Network Solutions, LLC
IANA ID
2

Registrant Contact

Name
Registrant Street: 41 SEYON ST STE 100 BLDG 1
Location
WALTHAM, MA, UNITED STATES

Technical Contact

Name
Administrator, IT
Location
UNITED STATES

Name Servers

  • HOLLY.NS.CLOUDFLARE.COM
  • HARVEY.NS.CLOUDFLARE.COM

How to Verify repligen.com Email Addresses

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Frequently Asked Questions

Yes, repligen.com is the official corporate email domain for Repligen Corporation. It is used for internal business communications and is not available for public registration.
No, repligen.com is a corporate email domain belonging to Repligen Corporation, used exclusively by employees and authorized personnel.
repligen.com uses enterprise-grade mail infrastructure. Check the MX records section above for specific mail server details.
B2B marketing to repligen.com requires proper consent. Corporate domains may use catch-all configurations, so verify individual addresses before sending.
Corporate domains like repligen.com may use catch-all configurations. Use BulkEmailChecker's advanced verification to detect catch-all behavior.
The fastest and most accurate way to verify a repligen.com 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 repligen.com'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 repligen.com 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 repligen.com 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 repligen.com 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.

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