Postfix — Common Ports
Aliases:Postfix Admin
Community software entries: links are references, not individual verification.
Default Ports (1)
TCP 25 carries SMTP mail transfer, commonly between mail servers. Mail clients should use the submission endpoint specified by their provider.
MailTransferProxy
Auxiliary Ports (admin / metrics) (1)
8080 is a common alternate HTTP listener, including Tomcat deployments. It is not a universal proxy or framework port; inspect the actual process and configuration.
PostfixMailServerManagement
Scope
Port associations on this page are community-database references (common usage), not a live measurement of any machine; confirm with the official documentation before deployment.
Frequently asked questions
What port does Postfix use?
Postfix commonly uses these ports: 25, 8080. The default port is 25. These are community database references — actual configuration may differ.
How do I check if Postfix is running?
Run sudo ss -tlpn 'sport = :25 or sport = :8080' on the server to check for listening processes on these ports. Also use systemctl status <service> to check the service state. Without root you may not see other users' processes. A listening port alone does not prove the software identity — verify with the config file and process name.
What category does Postfix belong to?
Postfix belongs to the Email & Messaging category. This page lists the software's port associations and their roles.
What other ports does Postfix use besides the default?
Postfix also uses these ports: 8080. Their purpose (admin interface, metrics, or alternative configuration) is detailed in the role-grouped list above.
Quick Info
- Categories
- Email & Messaging
- Associated ports
- 2
- Aliases
- Postfix Admin