Server

Settings

What holds for the whole instance, whoever is signed in. Your own name, e-mail, notifications and DMARC report address are under Account.

Log retention

Keep outbound log rows, days

The main driver of /data growth. Does not affect mail.log rotation (fourteen daily files).

Send notification e-mails

Sent through this relay from postmaster@mail.example.org. Each user picks the events under Account; a user without an e-mail gets none.

Read-only

Level 1 · per client IP: 600 / h; Set in .env; restart to change. Nothing below may exceed it.
Level 2 · domain, application: Set on each domain and application.