AWS Route 53

Connect to your AWS Route 53 dashboard

Click on the hosted zone with your domain name to view the records for your domain.

1. Set the MX record

Select MX from the Type dropdown to find the MX record for your domain.

Update an existing MX record

Select the MX record for your domain, click Edit record, and replace the existing value with the following:

10 mx1.mailcast.io
20 mx2.mailcast.io

Create a new MX record

If there is no existing MX record, click Create record and add the following values:

Leave the Record name blank
Select MX as the Record type
Add the following as the Value:
```
10 mx1.mailcast.io
20 mx2.mailcast.io
```

2. Set the SPF record

Select TXT from the Type dropdown to find the TXT records for your domain.
Select the TXT record with only your domain as the Record name.

Update an existing SPF record

Click Edit record

The TXT record may contain multiple lines.
Find the line that starts with v=spf1 and update by adding include:spf.mailcast.io after the v=spf1 and before the rest of the record, separated with a space on either side.

Add a new SPF record

Click Create record and add the following values:

Leave the Record name blank
Select TXT as the Record type
Add the following as the Value:
```
"v=spf1 include:spf.mailcast.io ~all"
```

3. Set the DKIM record

This is only necessary if you have enabled sending on your domain.

Click Create record and add the following values:

Enter mailcast._domainkey as the Record name
Select CNAME as the Record type
Add the following as the Value:
```
dkim.mailcast.io
```

4. Set the DMARC record

This is only necessary if you have enabled sending on your domain.

Select TXT from the Type dropdown to find the TXT records for your domain.
Select the TXT record with _dmarc as the Record name.

If you already have a DMARC record, then there is no need to update it.

This is a minimal DMARC record that will suggest that unauthorised emails sent from your domain are marked as spam. Learn more about DMARC to help you decide how to configure your DMARC policy.

Click Create record and add the following values:

Enter _dmarc as the Record name
Select TXT as the Record type
Add the following as the Value:
```
"v=DMARC1; p=quarantine;"
```

5. Validate your DNS updates

Click on the DNS tab for your domain from within Mailcast Domains and click Validate to check if your DNS updates are correct.