Error: “Server Error” While Uploading an Attachment in Roundcube Webmail
Introduction When uploading attachments in Roundcube Webmail, you might encounter a “Server Error.” This issue often arises from file size limits, server security rules (such as ModSecurity settings), or network interruptions. ModSecurity is a web application firewall designed to protect servers by monitoring and blocking potentially harmful requests. However, its strict security rules can sometimes