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Month: <span>January 2020</span>

Month: January 2020

Office 365 Address Verification, SPF, DMARC and DKIM

Office 365 Address Verification, SPF, DMARC and DKIM
L. Mark Stone Zimbra Tips January 27, 2020 January 27, 2020

To date, when most people think of anti-spam, they think of blocking inbound spam. Most people don’t think about taking steps to ensure that their domain won’t be spoofed by bad actors, often because they presume that email that spoofs their domain would be blocked by the recipients. But that’s …

Read more"Office 365 Address Verification, SPF, DMARC and DKIM"

Zimbra Performance Tip For Busy Zimbra Servers – Modify updatedb Settings

Zimbra Performance Tip For Busy Zimbra Servers – Modify updatedb Settings
L. Mark Stone Zimbra Tips January 16, 2020 December 10, 2021

Do any of these describe your Zimbra system? You have a large mail store (1TB or more) Your Zimbra system is busy with a lot of inbound and/or outbound emails every day You keep backups for a long time You believe you have plenty of RAM but you are finding …

Read more"Zimbra Performance Tip For Busy Zimbra Servers – Modify updatedb Settings"

Recent Posts

  • Zimbra Postfix – System-Wide Sender Domain Blocking
  • Zimbra Custom Delegated Admin Account – Password Resets Only
  • Secure Your Zimbra Distribution Lists From Bad Actors
  • Zimbra Selective Postfix Rate Limiting To Improve Email Deliverability
  • How To Defend Zimbra Against Distributed Brute Force Login Attacks

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