PROBLEM
Our need is to block all email addresses/domain not configured in the Atmail server.
ENVIRONMENT
- On-Premise Server + WebMail Installations: Version 6.0 > Current Version
CAUSE
So I want to avoid mail deliveries from addresses like bill.gates@microsoft.com or george.bush@whitehouse.org.
RESOLUTION
Open and edit the Exim configuration file located at /usr/local/atmail/mailserver/configure, please remember to also back up this file before changes are made. Find and delete the following code.
# This router routes addresses that are not in local domains by doing a DNS # lookup on the domain name. dnslookup: driver = dnslookup domains = ! +local_domains transport = remote_smtp ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 no_more |
Restart the Atmail server and test.
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