Service Status Submit a Request
English Français
go back to rebel.com

How to Fix Spamhaus Domain Blacklist (Plesk Email)

Articles in this section

See more
Avatar
Israel
Updated
Follow
If your outgoing emails suddenly bounce back with delivery errors explicitly mentioning Spamhaus, your domain name or email server IP address has been flagged on a Spamhaus Blocklist (such as the Spamhaus DBL - Domain Blocklist or Spamhaus SBL/XBL/ZEN).
 
Spamhaus is an international threat-tracking database used by major email service providers (Gmail, Outlook, Yahoo, and private mail servers) to reject traffic originating from flagged domains or shared web hosting IP ranges.
 

Common Spamhaus Email Bounce Error Messages

When your domain or mail server IP is flagged by Spamhaus, your email client (Outlook, Thunderbird, Apple Mail, Webmail, or Plesk) will receive an immediate Non-Delivery Report (NDR).
 
Look for bounce-back codes containing any of the following Spamhaus triggers:
  • Spamhaus DBL (Domain Blocklist) Bounces:
    • 550 5.7.1 Domain [yourdomain.com] blocked using Spamhaus DBL
       
    • 554 5.7.1 Message rejected: domain listed in dbl.spamhaus.org
       
    • 550 5.7.1 Service unavailable; Client host blocked using dbl.spamhaus.org
       
    • 550 Listed in Spamhaus DBL - See https://www.spamhaus.org/query/dbl?domain=yourdomain.com
  • Spamhaus SBL / XBL / ZEN (IP Blocklist) Bounces:
    • 550 5.7.1 Service unavailable; Client host [23.x.x.x] blocked using zen.spamhaus.org
       
    • 550 Refused - IP Address on Spamhaus SBL/XBL list
       
    • 554 5.7.1 Host 23.x.x.x has been blocked by Spamhaus ZEN
  • Plesk Server & Mail Relay Error Triggers:
    • 550 5.7.1 Command rejected: Mail server IP is listed on Spamhaus
       
    • 550 Message refused by recipient system: Spamhaus DNSBL match

Step 1: Check Your Exact Spamhaus Listing Status

If you receive any of the Spamhaus error messages above, verify your exact listing details using these official security diagnostic tools:

Step 2: Self-Service Delisting vs. Hosting Provider Removal

Spamhaus categorizes listings into two distinct resolution paths based on where the block originates:
  1. Individual Domain Listings (Self-Service Removal):
    If Spamhaus flags a standalone domain reputation issue without network-level locks, you can request an immediate removal yourself. Follow the prompts on check.spamhaus.org, submit your contact email address, and click the confirmation link sent to your inbox.
     
  2. Shared Plesk Hosting / Provider Network-Level Listings (Spamhaus DBL):
    Because Plesk Web and Email Hosting operates on shared server IP infrastructure, Spamhaus frequently places a Provider/Network Hold. In these cases, Spamhaus explicitly restricts end-user self-service requests and requires your web hosting provider to audit server node health and submit the official provider delisting request.

Step 3: How to Submit a Provider Delisting Request to Support

If Spamhaus indicates that your hosting provider must initiate the removal, our technical support team will step in to clear the block on the infrastructure level.
 
Please submit a ticket to Support containing:
  1. Affected Domain Name: (e.g., yourdomain.com)
     
  2. Full Spamhaus Bounce Text: (Paste the exact 550 or 554 Spamhaus error code received)
     
  3. Spamhaus Lookup Results: (A screenshot or direct link from check.spamhaus.org)
Our Hosting & Systems Operations team will inspect the underlying shared Plesk server node, verify outbound mail hygiene, and submit the formal provider-level delisting request directly to Spamhaus on your behalf.

Comments

0 comments

Please sign in to leave a comment.