Symptom/Error
You'll experience these symptoms:
Workflow emails successfully deliver to individual email addresses
Same workflow emails fail to reach email groups or distribution lists
Emails appear as "sent" in Mandrill, but recipients never receive them
No error messages appear in the Dazos workflow system
Cause
Email groups often have stricter security settings than individual inboxes.
When [email protected] is not whitelisted as a trusted sender for the group, the group's email server rejects the messages at the recipient level, even though Dazos successfully sends them.
Solution
Step 1: Access Your Email Group Settings
Navigate to your email system's administration panel, where you can manage distribution lists and email groups.
Step 2: Whitelist [email protected]
Add [email protected] as a trusted sender or safe sender for the affected email group. The exact steps vary by email provider:
Microsoft 365: Add to the group's allowed senders list
Google Workspace: Configure the group's whitelist settings
Exchange Server: Update the group's mail flow rules
Step 3: Test the Configuration
After whitelisting, trigger a test workflow to verify that emails now reach the email group successfully.
Alternative Solution: Use Individual Recipients
If whitelisting is not possible or doesn't resolve the issue:
Remove the email group from the workflow
Add individual email addresses of all group members directly to the workflow
This bypasses group-level restrictions while ensuring all intended recipients receive the emails
Verification
After implementing the solution, you should see:
Workflow emails were successfully delivered to the email group
No bounced or rejected messages in Mandrill logs
Group members confirming receipt of workflow emails
Escalation
Contact Dazos Support if:
The issue persists after whitelisting [email protected]
You need assistance identifying which specific email groups are affected
You require help with Mandrill log analysis to confirm delivery status
Related Resources
How to Diagnose and Resolve Email Rejection with Mandrill (Denylist Issue)
Troubleshooting Group Email Failures (CRM)
How to Make Dazos a Safe Sender (Whitelisting Guide)