Check DNS records

To avoid problems sending or receiving mail, make sure that your DNS records are configured correctly. You can do this with http://www.digwebinterface.com or any other dig utility:

  1. Check the MX record:

    1. Specify your domain name in the Hostnames or IP addresses field (such as example.org).

    2. In the Type field, select MX and click Dig.

    3. The response should look like this:

      example.org.		20755	IN	MX	10 mx.yandex.net.
  2. Check the SPF record:

    1. Specify your domain name in the Hostnames or IP addresses field (such as example.org).

    2. In the Type field, select TXT and click Dig.

    3. The response should look like this:

      example.org. 21600 IN TXT "v=spf1 redirect=_spf.yandex.net"

      or

      example.org. 21600 IN TXT "v=spf1 ip4:IP-1 ip4:IP-2 ip4:IP-3 include:_spf.yandex.net ~all"
  3. Check the DKIM signature:

    1. In the Hostnames or IP addresses field, choose the subdomain that looks like mail._domainkey.example.org (where example.org is your domain name).

    2. In the Type field, select TXT and click Dig.

    3. The response should look like this:

      mail._domainkey.example.org. 21599 IN TXT "v=DKIM1\; k=rsa\; t=s\; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlk+IUXTHUIumVpG1S0vwFuwO9AC2aRrJj21MLj7xvO0Brys/fDxOTaFsoVsA2/t9mcxf1kqx/bCsEvJiiOUUw5eihQefcY7xJoeruJK/o+IKU2dTO9OOPfSyqGLuQ+v/DMJRjhz73XOpkPOpPwLhQKhvBLNM2TCxPqCL0E42/7wIDAQAB"
  4. Check the CNAME record:

    1. In the Hostnames or IP addresses field, choose the subdomain that looks like mail.example.org (where example.org is your domain name).

    2. In the Type field, select TXT and click Dig.

    3. The response should look like this:

      mail.example.org. 21599 IN CNAME domain.mail.yandex.net.
  5. If the server doesn't respond, the response doesn't match the request, or it contains too many records, it means the DNS records weren't properly configured. Configure them following the instructions: MX record, SPF record, DKIM signature, CNAME record.

    Attention. Wait 72 hours before checking the DNS records again. DNS servers need this time to update their record data.