How to Verify Your DMARC Record | Zimbra

Alert! This article is written for Zimbra OSE users. As of December 2023, Synacor will no longer be providing support for Zimbra OSE. You might want to consider trying out Carbonio Community Edition – Zextras’s free and open-source email and collaboration platform.

For additional guidance, check out our community articles detailing the process of migrating from your current platform to Carbonio CE.

DMARC Record Verification

Assuming you have already created your DMARC rule, added it to your DNS, and want to check your SPF configuration. The DMARC record is stored in DNS as TXT and you can manually check the DKIM record for a domain by using nslookup or dig as follows

1. In the terminal type

nslookup -type=txt _dmarc.yourDomain


dig txt _dmarc.yourDomain

Replace yourDomain with your domain name, for example, nslookup -type=txt,

2. If a DMARC record exists, the result would contain your record starting with v=DMARC1,

3. If a DMARC record doesn’t exist or there is a problem retrieving the record for the domain there would be no v=DMARC1 property in the output.

To test your DMARC, you can also check if the DNS entry for your DMARC is correct by entering your domain into If you set your DMARC entry correctly it will show you the results meaning your DMARC passed the test. The MX toolbox should be enough to test your SPF but there are other tools available online for this purpose. For example, another tool you can use to see a list of IPs you set as authorized in your DMARC rule is

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