{{/* Wide enough for mail queue and TLS certificate side by side (see .split in panel.css, as on account and delivery). */}} {{define "wide"}}wide{{end}} {{define "content"}}
Receiving servers check that the name this server announces resolves to its address and that the address resolves back to the same name (forward-confirmed reverse DNS). A missing or mismatched reverse record is the most common reason self-hosted mail is rejected or scored as spam. The reverse record is set at the hosting provider, not in the domain's DNS zone.
{{if .Hostname}}{{.Hostname}}{{else}}(SELFPOST_HOSTNAME is not set){{end}} {{if .PTR.Records}} {{range .PTR.Records}}{{.}} {{end}} {{end}}{{.PTR.Detail}}
Regenerates the OpenDKIM and Postfix configuration from the database and reloads both daemons. Use it if you edited the files by hand, restored a backup, or the running configuration looks out of step with the domain and application lists. It does not touch the mail queue or the TLS certificate, and it is safe to run at any time.