Hello Zimbra Customers, Partners & Friends, Zimbra traditionally stores Authentication Tokens, CSRF Tokens and log-on timestamps to LDAP. On Zimbra systems with a large number of active users, this increases the load on the LDAP server, which can cause LDAP responses to slow down. Zimbra supports storing short-lived data (aka ephemeral data) to a separate […]
Author Archive | Barry de Graaff
Zimbra SkillZ: How to use Zimbra with Let’s Encrypt Certificates (update)
Hello Zimbra Customers, Partners & Friends, Today’s blog post is all about using Let’s Encrypt certificates with Zimbra. Let’s Encrypt is a way to obtain trusted and free TLS certificates. To obtain certificates you can use a program called Certbot. You can find instructions for setting up certbot at https://certbot.eff.org/instructions. If you already use Let’s […]
Zimbra SkillZ: Salesforce Zimlet — Email2Case
Hi Zimbra Partners, Customers & Friends, Salesforce Email-to-Case automatically turns customer emails into cases, so your agents can quickly track and resolve issues. This Zimlet adds Email2Case to the Zimbra More menu. Configure and Deploy the Zimlet Here are the steps to configure and deploy the Zimlet … Get zimbra-zimlet-salesforce.zip and as Zimbra user: zmzimletctl […]
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, […]
Zimbra SkillZ: Enhance email confidentiality using MTA-STS
By Barry de Graaff on July 21, 2021 in Product News, Community, Zimbra Server, Zimbra SkillZ, Zimbra Web Client
Hi Zimbra Customers, Partners & Friends, Do you want to prevent man-in-the-middle attacks and enhance your email confidentiality? You can with MTA-STS. MTA-STS is short for Mail Transfer Agent (MTA) Strict Transport Security (STS). MTA-STS enforces encryption and secure communications between SMTP servers via TLS (Transport Layer Security). With MTA-STS fully implemented, it prevents man-in-the-middle […]
Zimbra SkillZ: Using Sieve Filters on Zimbra
By Barry de Graaff on July 14, 2021 in Product News, Did You Know, PowerTips – Admins, Zimbra Web Client
Hi Zimbra Customers, Partners & Friends, Sieve is a powerful scripting language for filtering incoming email messages. This blog is a short how-to for using sieve filters on Zimbra webmail. Zimbra supports incoming email filters set by users, but administrators should set up and install sieve filters. First, allow adding email headers to help debug […]