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Why was my SendGrid Account Suspended Due to a SURBL Domain Listing?

Question

Why was my SendGrid account suspended due to a SURBL domain listing?

 

Product

Twilio SendGrid Email

 

Answer

Your SendGrid account was suspended because a domain used in your email content was flagged by SURBL as malicious or associated with phishing. This can happen even if the domain is your own or a domain you trust.

Domains can be listed by SURBL for a variety of reasons, including:

  • Being compromised or hijacked by bad actors.
  • Hosting phishing or malware content.
  • Being referenced frequently in spam campaigns, even unintentionally.
  • Redirection to harmful websites.

To resolve a suspension due to a SURBL listing, follow these steps:

  1. Check the domain status:
    • Visit SURBL Lookup Tool and enter the domain(s) in question to confirm if it is currently listed.
  2. If the domain is listed:
    • Review the security of the domain and ensure it is not hosting or redirecting to malicious content.
    • Work with your hosting provider or web administrator to fix any issues or vulnerabilities.
  3. Request removal from SURBL: If you've fixed the issue or believe the listing is in error, you can request a delisting directly through the website, scrolling down you can fill out the removal request form:

    Screenshot 2025-09-14 at 3.06.02 PM.png
     

Additional Information

  • Always verify third-party domains you link to in your emails.
  • Consider using branded or verified link shorteners instead of third-party URL shorteners.
  • Regularly audit the links in your email templates to prevent future suspensions.
  • SURBL is one of several blocklists SendGrid monitors. A clean domain reputation is essential to maintain uninterrupted service.

     
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