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Zimbra MySQL Logger
Port 7307 is utilized by Zimbra Collaboration Suite as a MySQL logger service, supporting backend operations like email indexing, logging, and internal database management. It facilitates communication between Zimbra components, maintaining system health and operational data tracking..
Port 7307 is an unofficial service port primarily tied to the Zimbra Collaboration Suite (ZCS), a widely used open-source email and collaboration platform. Within ZCS, this port facilitates the MySQL logging service which is integral for internal database communications and audit trails. The MySQL logger instance manages metadata related to mail flow, indexing, and event tracking to optimize email delivery and server maintenance.
The MySQL logger operates separately from the main MySQL instance to isolate critical logging functions, ensuring uninterrupted logging capabilities even during primary database maintenance or issues. This architectural separation benefits administrators by providing better diagnostics and monitoring. Communications over this port typically involve internal system operations with minimal direct interaction from end-users.
Because port 7307 supports backend activities, it is usually restricted to internal network communications. However, if improperly configured or exposed externally, this service port can become a vector for unauthorized access or data leakage. Network segmentation and access controls are therefore vital for its operation. It is important to note that this port is not officially designated by IANA, highlighting its reliance on default, unofficial standards within Zimbra deployments.