Configuring DNS
FortiMail units require DNS servers for features such as reverse DNS lookups, FortiGuard connectivity, and other aspects of email processing. Your ISP may supply IP addresses of DNS servers, or you may want to use the IP addresses of your own DNS servers.
| If the FortiMail unit is operating in gateway mode, you must configure the MX record of the DNS server for each protected domain to direct all email to this FortiMail unit instead of the protected SMTP servers. Failure to update the records of your DNS server may enable email to circumvent the FortiMail unit. |
| For improved FortiMail unit performance, use DNS servers on your local network. |
Go to System > Network > DNS to configure the DNS servers that the FortiMail unit queries to resolve domain names into IP addresses.
To access this part of the web UI, your administrator account’s:
• Domain must be System
• access profile must have Read-Write permission to the Others category