Knowledgebase
Email Protection Error: 554 Message Denied: RBLDNSD
Posted by on 05 June 2015 04:01 PM
Question:

Messages sent to my users are being denied with the error "554 Message Denied: RBLDNSD." What is this error and how can it be resolved?
Answer:


SYMPTOMS

Messages are being denied. The recipient disposition has the following event:
 
554 Message Denied: RBLDNSD
 

 
CAUSE

The Email Protection Inbound Spam Classification window includes an option labeled "Enable real-time block lists (RBLs).” Enabling this option helps reduce the chance of receiving spam email messages from IPs that are seen as not reputable.
 
RESOLUTION
 
To disable this filter and allow these messages through:
1. Log on to the Control Console
2. Select Email Protection
3. Select Policies
4. Highlight the desired inbound policy (usually Default Inbound) and click Edit
5. Click the Spam tab, this will default to the Classifications sub tab
6. Disable the checkbox for Enable real-time block lists (RBLs)
7. Click Save. Please allow 20 minutes for full replication across McAfee's servers.


Comments (0)
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This product will not work properly unless untill that value is changed.

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