DNS Setup

After your Mailcow Email service is provisioned, you must configure DNS records for your domain. These records ensure email delivery, authentication, and client auto-configuration all work correctly.

Finding Your DNS Records

1. Open the customer portal at console.digitalfyre.com
2. Navigate to Services and open your Mailcow Email service
3. Click the DNS Records tab

The portal displays all required records with the exact values for your server. The server hostname varies by location and assignment (e.g., us-nyc-1.mailcraft.io).

Required Records

The DNS Records tab shows the following records. Add each one to your domain’s DNS provider.

MX Record

Directs incoming email to your Mailcow server.

Type	Host	Priority	Value
MX	yourdomain.com	10	(your server).mailcraft.io

SPF Record

Authorizes your Mailcow server to send email on behalf of your domain. Helps prevent spoofing and improves deliverability.

Type	Host	Value
TXT	yourdomain.com	v=spf1 mx include:spf.mailcraft.io ~all

DKIM Record

Adds a cryptographic signature to outgoing email, proving it was sent from an authorized server.

Type	Host	Value
TXT	dkim._domainkey.yourdomain.com	(DKIM public key shown in portal)

The DKIM key is a long string unique to your domain. Copy the full value from the DNS Records tab.

DMARC Record

Tells receiving servers what to do with email that fails SPF or DKIM checks.

Type	Host	Value
TXT	_dmarc.yourdomain.com	v=DMARC1; p=quarantine; rua=mailto:[e-mail]

Autodiscover and Autoconfig CNAMEs

Enable automatic email client configuration for Outlook, Thunderbird, and mobile devices.

Type	Host	Value
CNAME	autodiscover.yourdomain.com	(your server).mailcraft.io
CNAME	autoconfig.yourdomain.com	(your server).mailcraft.io

Verification

After adding all records, allow time for DNS propagation (typically a few minutes to a few hours). You can verify your records using DigitalFyre’s DNS tools or any online DNS lookup service.

Missing or incorrect DNS records will cause email delivery failures. The MX record is essential for receiving email. SPF, DKIM, and DMARC are essential for deliverability — without them, your outgoing email is likely to be flagged as spam or rejected by receiving servers.