If you’re still encountering the Wolters Indiana MW3 error, there are additional troubleshooting steps you can try. One possible solution is to clear the cache of the COD HQ application. Clearing the cache can help remove temporary files and data that might be causing conflicts or gli...
Reverse DNS (rDNS), aka PTR record, is used to check if the sender’s IP address matches the HELO hostname. You don’t need to add another PTR record when adding a new mail domain. Your rDNS should be set to just one hostname, i.e. the hostname set in Postfix, which can be s...