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DKIM Lookup

Check DKIM records.
A selector is used to identify the DKIM public key information in DNS. You can use 'default' or any other unique string.
Longer keys (2048-bit or higher) are more secure. 1024-bit is considered weak by some modern mail providers.

What is DKIM Lookup Tool?

DKIM (DomainKeys Identified Mail) is an email authentication method that allows the receiver to verify that an email was actually sent and authorized by the owner of that domain. This tool generates DKIM keys for your domain to enhance email security and deliverability.

What Does DKIM Lookup Tool Do?

DKIM Lookup tool generates public and private key pairs for your domain with customizable key lengths (1024, 2048, or 4096 bits). It provides the DNS TXT record for public key publication and the private key for your mail server configuration.

How to Use DKIM Lookup Tool?

Enter your domain name and selector (e.g., "default"), choose your desired key length for security level, then click "Generate DKIM Keys". The tool will provide DNS records and private key with installation instructions.

What are the Benefits of DKIM Lookup Tool?

The tool helps improve email deliverability, prevents email spoofing, protects your domain reputation, reduces spam classification, and ensures your emails are authenticated by receiving mail servers.

What Should You Pay Attention to When Using the Tool?

Choose appropriate key length (2048-bit recommended for most cases), keep your private key secure, add the DNS TXT record correctly, configure your mail server properly, and allow 15-60 minutes for DNS propagation.

Frequently Asked Questions

What is a DKIM selector and how should I choose it?

A DKIM selector is a string that helps identify which DKIM key to use for verification. Common selectors include "default", "mail", or "dkim". You can use any alphanumeric string, but "default" is commonly used. If you have multiple mail servers, you can use different selectors for each.

Which key length should I choose?

For most users, 2048-bit keys provide excellent security and are widely supported. 1024-bit keys are less secure but compatible with older systems. 4096-bit keys offer maximum security but may have compatibility issues with some mail servers. We recommend 2048-bit for the best balance.

Are there any daily limits for the DKIM Lookup tool?

Yes, generating DKIM keys is subject to certain daily limits based on your user group or membership plan. You can upgrade your membership for higher limits.

How do I install the generated DKIM keys?

First, add the DNS TXT record to your domain's DNS settings using the provided hostname and TXT value. Then, configure your mail server (Postfix, Exim, etc.) with the private key. Wait 15-60 minutes for DNS propagation, then test your DKIM setup using email authentication tools.

Can I generate multiple DKIM keys for the same domain?

Yes! You can generate multiple DKIM keys for the same domain by using different selectors. This is useful if you have multiple mail servers or want to rotate keys periodically for enhanced security.

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