By default Zimbra OpenDKIM does not sign the Subject header. At this time the configuration of what headers are signed by Zimbra OpenDKIM cannot be done via zmprov. There is a pending feature request to make these headers configurable via zmprov. In this article you will learn how to configure Zimbra OpenDKIM by customizing the […]
Tag Archives | zimbra dkim
Email Security Webinar – SPF and DKIM
By Barry de Graaff on March 16, 2022 in Product News, Community, Security & Privacy, Webinars, Zimbra Server
Hello Zimbra Customers, Partners & Friends, Zimbra’s Barry de Graaff and Randy Leiker from Skyway Networks team up for a new webinar series focused on Email Security. These hands-on webinars will include practical how-to information and best practices to help you maximize Zimbra. Learn how to fine-tune key security standards like SPF, DKIM, DMARC, MTA-STS, […]
Zimbra SkillZ: How to Use SPF, DKIM and DMARC on Zimbra
Hi Zimbra Customers, Partners & Friends, This blog is a short “how-to” for setting up SPF, DKIM and DMARC on Zimbra. What is SPF? Sender Policy Framework (SPF) helps prevent email spamming and spoofing by telling the world what servers are allowed to send email from your domain. If an email is sent from user@example.com, […]
Email Protection Best Practices: SPF, DKIM and DMARC
By Jorge de la Cruz on April 9, 2015 in Open Source, PowerTips – Admins, Security & Privacy, Zimbra Server
As Zimbra Collaboration is a central communication hub for your business, it needs to be protected and secured. Zimbra Collaboration contains multiple antispam features like SpamAssassin, Amavis-d, etc. But, how do you protect against spoofing? How do we ensure outgoing emails are not going into the junk folder of recipients using other platforms like Google Apps, Outlook 365, […]