Server

Settings

What holds for the whole instance, whoever is signed in. Your own name, e-mail and password 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).

Keep inbound log rows, days

The inbound log also never holds more than 10 000 rows: refused mail is logged at the rate strangers knock on port 25.

Sending rate limits

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.

Notifications

Send notification e-mails

From postmaster@mail.example.org, to every user who has an e-mail and has not turned them off under Account.

Notification mail

DNS records of the server's own name

DKIM

publishedNot a secret · selector sp2026

Host / name

Type

Value to publish

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAq7n2Lw0c5vXeR1dYt8uJb3mKs6pHf9aZoWg4iNy2TqCx0lVjE7rUh5sBk1dMa8fPz3oGc6yXw9tIe4nQv2uL…IDAQAB

SPF

missingFor the server's own name, not for your domains

Host / name

Type

Value to publish

Notifications are sent without it, and a receiver may file them as spam.