If you prefer to Direct Mailing mode, DNS settings are needed to query mail exchange information. A DNS must be a valid IP address like '18.104.22.168'. Email Marketer read DNS settings from Windows by default. You can also inquiry your ISP or network master for the DNS settings.
Preferred DNS Server
IP address for preferred DNS Server. It is recommended you enter a local DNS in your local network.
Alternate DNS Server
IP address for secondary DNS Server. This setting is optional.
Acquires and fills DNS servers from your network automatically.
Tests if the DNS servers work or not.
Timeout for querying a mail exchange record. The default is 5 seconds.
Retry count for querying a mail exchange record. The default is 10 times.
Buffer MX Exchange query results
Queries buffered results in the application instead of always querying the DNS server. DNS caching speeds up your delivery.
Clear MX Exchange buffer before publish
Clears the buffer before you start a mailing task.