DNS Verification

DNS (Domain Name System) is at the core of the internet and email delivery. When configuring a BYO Domain DKIM and SPF records are required to confirm domain ownership and enable outbound mail. MX records are required to receive mail at Mailsac.

MX Record Verification

The values of the MX Records are the same for all Private and Public Domains hosted by Mailsac. The Host will be unique per domain.

Type Host Value
MX dogtreats.msdc.co 1 in.mailsac.com
MX dogtreats.msdc.co 5 alt.mailsac.com

To verify a domain’s MX Records the command line tool dig can be used. In this example, the domain dogtreats.msdc.co is being used.

dig MX dogtreats.msdc.co
../../_images/dig_mx_record.png

The values in the ANSWER SECTION show that the records are configured correctly because it corresponds to the value in the table above.

DKIM Record Verification

DKIM Records are unique per domain. The value of the required DKIM record can be found in the Dashboard under Domains, then click “Manage” and choose the “DNS Setup” tab.

Type Host Value
TXT mailsacrelay._domainkey.dogtreats.msdc.co. v=DKIM1; k=rsa; p=MI….

DKIM Records are a DNS TXT record and can be queried using the command line tool dig.

dig TXT mailsacrelay._domainkey.dogtreats.msdc.co.
../../_images/dig_dkim_record.png

The value in the ANSWER SECTION show that the DKIM record is configured correctly because it corresponds to the value of the provided DKIM record in the Dashboard under Domains.

SPF Record Verification

SPF Records are the same for all Private and Public Domains hosted by Mailsac. The Host will be unique per domain.

Type Host Value
TXT dogtreats.msdc.co. v=spf1 include:relays.mailsac.com ~all

SPF Records are a DNS TXT record and can be queried using the command line tool dig.

dig TXT dogtreats.msdc.co.
../../_images/dig_spf_record.png

The values in the ANSWER SECTION shows that the record is configured correctly because it corresponds to the value in in the table above.