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Important logs in IceWarp
The following log settings are recommended for both On-premise and Cloud instances.Administration Console > System > Services > GeneralSMTP: Extended – Logs all information about emails, including ...
How to troubleshoot Let’s Encrypt Certificate
To generate a Let’s Encrypt certificate: Open the Administration Console and go to:System > Certificates Click Add Certificate. Choose Free Let’s Encrypt Certificate, then select the domain for whi...
Most Common Reasons for Microsoft Blacklisting
Microsoft blacklisting has become an increasingly common issue. Below are the most frequent causes: Missing SPF/DKIM recordsEnsure proper email authentication is configured. You can test your SPF a...
How to control mailbox quota in IceWarp
To configure a warning when a user’s mailbox approaches its capacity limit, follow these steps:Open the Remote Console and navigate to:Domains & Accounts > Global Settings > Domains > Warn users wh...
How to Block Emails Containing Specific Characters or Non-Standard Alphabets
There are two ways to block emails that include certain characters or alphabets:Option 1: Create a Hard RuleDefine a specific character (or set of characters) as forbidden. Any email containing the...
Hybrid setup (IceWarp & Google Workspace)
This guide is designed to provide detailed instructions on configuring IceWarp in a hybrid environment with Google Workspace.The outcome is to use the same domain on both servers, where some users ...
Cannot open attachments on iOS 18
Since the release of iOS 18, many users have reported that Apple’s native Mail app frequently fails to download attachments properly — especially PDFs, images (JPEG/PNG), or even smaller files. The...
How to configure a Relay Server in IceWarp
The relay server can be configured through the Administration Console under Mail > General.There are two ways the relay server can be used:Primary Relay – All outgoing emails are sent through the r...
How to configure SSL/TLS for a MySQL database?
This article explains how to configure SSL/TLS for a MySQL database.In some scenarios, SSL/TLS may not be necessary: The IceWarp application and the MySQL database are hosted on the same server. Th...
How to rename users or domains in IceWarp
Renaming a user: The best way to rename a user is to add secondary alias, because people might send emails to the old user name.Renaming a domain: The best way is to create a domain alias.Create an...