SMTP Mail — Common Ports
Community software entries: links are references, not individual verification.
Role Unconfirmed (1)
TCP 25 carries SMTP mail transfer, commonly between mail servers. Mail clients should use the submission endpoint specified by their provider.
Simple Mail Transfer Protocol
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 SMTP Mail use?
SMTP Mail commonly uses these ports: 25. These are community database references — actual configuration may differ.
How do I check if SMTP Mail is running?
Run sudo ss -tlpn 'sport = :25' 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 SMTP Mail belong to?
SMTP Mail belongs to the Email & Messaging category. This page lists the software's port associations and their roles.
Quick Info
- Categories
- Email & Messaging
- Associated ports
- 1
- Aliases
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