Namecheap.com DNS tutorial for MailRush.io

Configuring your Namecheap DNS setup for your MailRush.io account should not be complicated if you have a fair understanding of how to configure a DNS zone.

In short, we will need:

A TXT record for the SPF entry of the main domain used to include mailrush.io server. This entry is used for domain authentication.
A TXT record for the SPF entry of the subdomain used in your MailRush.io account
An A record for the subdomain used in your MailRush.io account
An MX record for the subdomain used in your MailRush.io account
A TXT record for the public DKIM key

Other support entries may be required but since every DNS setup is different and you may be using additional mailing servers we cannot specify an entry.

Other support records may include:

A TXT record DMARC record.
A TXT record for the main domain SPF record. We also suggest adding mailrush.io servers in here.
An MX record for your mail server
An A record for your main domain also named as (@)
A TXT record for your main server DKIM
Any other required subdomain, CNAME, etc…

Adding up your MailRush.io settings to your Namecheap DNS

For our example, we will be sending emails using the domain name: marketeria.email

Add your MailRush.io Dashboard click on top menu item “Settings”

A screen will open showing a list of your DNS entries required for your MailRush.io account:

The above Authentication Details are the DNS records you need to add to your Namecheap DNS interface.

Then, proceed to enter these details at your Namecheap.com DNS management interface by clicking on “MANAGE” for your domain name:

You will get a screen with your current DNS zone.

Proceed to enter your new DNS records by clicking “ADD NEW RECORD”:

Insert A record for your subdomain to point to your provided MailRush.io IP address. Make sure to replace the IP address to the one we have provided in your MailRush.io settings. In our example the subdomain is msdbu:

Then, add a TXT record for your main domain (host @) as v=spf1 +a +mx include:_spf.mailrush.io ~all. Advise that if you have any other email server it should be listed here. You can learn more at How to fix your SPF record shown at the anti-spam check

Then, add a TXT record for you subdomain SPF record:

Then, add a TXT record for your public DKIM key for your subdomain. As for the host, we are going to use: default._domainkey.msdbu

Replace msdbu with your MailRush.io subdomain:

Following, add an MX entry for your MailRush.io subdomain. This setting is managed under the “MAIL SETTINGS” section as shown below:

Then, enter the MX record as:

MX Record for host msdbu with value msdbu.marketeria.email and a priority of 10. All TTL can be set as “Automatic”

Finally, Update any other support DNS entry depending on your needs and allow up to 24 hours for DNS propagation. Once DNS propagation is completed you can start sending emails to your contacts.

MailRush.io