DomainsLogQueue
DNSOKMX POINTS HERE

Inbound domains /

lists.example.org

Accepted on port 25, handed to mx.internal:25 over required TLS · 4 recipients

01

MX record

Checked 1 min ago

MX

publishedKeep any existing primary MX if this is a backup-MX
02

Upstream

Not a mailbox
03

Valid recipients

Unknown recipients are rejected at RCPT, so this relay generates no backscatter. Prefer a list unless the upstream itself rejects unknowns.