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Domains & Authentication

Add MailBlastr DNS records on Namecheap

Publish the SPF, DKIM, and DMARC records MailBlastr generates for your domain using Namecheap’s Advanced DNS tab.

This guide walks through adding the DNS records MailBlastr generates for a domain using Namecheap’s Advanced DNS tab. Add your domain in MailBlastr first to generate the records — see Managing domains — and keep the DNS records reference open for your exact DKIM record and region.

These steps require Namecheap BasicDNS (the default). If your domain uses Custom DNS / external nameservers, add the records at that provider instead.

Open Advanced DNS

  1. 1
    Open Domain List

    Sign in at namecheap.com, go to Domain List in the left sidebar, and click Manage next to your domain.

  2. 2
    Go to the Advanced DNS tab

    Open the Advanced DNS tab. The Host Records section is where you add the records below.

  3. 3
    Add each record

    Click Add New Record, choose the Type, fill in Host and Value, and click the green check to save. Repeat for all six records.

Namecheap’s Host field takes the subdomain part without the apex — Namecheap appends your domain automatically. Use @ only for the apex itself. For MailBlastr enter mailblastr._domainkey, send, and _dmarc — never the full …yourdomain.com.

DKIM — TXT

Add one TXT Record entry holding your domain’s DKIM public key.

DKIM — TXT
TypeTXT Recordoptional

A single DKIM key record.

Hostmailblastr._domainkeyoptional

Namecheap appends .yourdomain.com, giving mailblastr._domainkey.yourdomain.com. mailblastr is the fixed selector MailBlastr uses.

Valuev=DKIM1; k=rsa; p=<public key>optional

The DKIM key record holding your domain’s public key.

TTLAutomaticoptional

Namecheap default.

SPF — MX + TXT on the send subdomain

MailBlastr uses the custom MAIL FROM subdomain send.yourdomain.com. Enter send in the Host field for both records. Namecheap’s MX entry is an MX Record type with a separate Priority column.

SPF — MX
TypeMX Recordoptional

Receives bounce and complaint feedback for the MAIL FROM subdomain.

Hostsendoptional

Resolves to send.yourdomain.com.

Valuefeedback-smtp.us-east-1.amazonses.comoptional

Region-specific feedback host. Replace us-east-1 with your domain’s region.

Priority10optional

MX priority column.

TTLAutomaticoptional

Namecheap default.

SPF — TXT
TypeTXT Recordoptional

SPF policy for the MAIL FROM subdomain.

Hostsendoptional

Same host as the MX — resolves to send.yourdomain.com.

Valuev=spf1 include:amazonses.com ~alloptional

Authorizes Amazon SES for the MAIL FROM subdomain.

TTLAutomaticoptional

Namecheap default.

DMARC — TXT on _dmarc

DMARC — TXT
TypeTXT Recordoptional

DMARC policy record.

Host_dmarcoptional

Resolves to _dmarc.yourdomain.com.

Valuev=DMARC1; p=none;optional

A monitoring policy to start with.

TTLAutomaticoptional

Namecheap default.

Namecheap-specific gotchas: the Host field uses @ for the apex and the bare subdomain (e.g. send) for everything else — never the full domain; and remove or ignore Namecheap’s default “Parking Page” URL/CNAME records on the apex, which are unrelated to mail.

Namecheap typically propagates within about 30 minutes. Once all six records are saved, return to MailBlastr and re-verify the domain.