да каким образом они туда попали когда нет междусайтовой репликации по smtp
The Transport service never communicates directly with a mailbox database. Instead, the Transport service communicates with the Mailbox Transport service locally or on remote Mailbox servers. Only the Mailbox Transport service communicates with the local mailbox database. When the Mailbox server is a member of a DAG, only the Mailbox Transport service on the Mailbox server that holds the active copy of the mailbox database accepts messages for the destination recipient.
Remote procedure calls (RPCs) are used only by the Mailbox Transport service to send messages to or receive messages from the local mailbox database. When the Mailbox server is a member of a DAG, the Mailbox Transport service only uses RPCs to communicate locally with the active copies of the mailbox databases. In other words, RPC is never used for cross-server or cross-service communication. Instead, the Mailbox Transport service and the Transport service always communicate using SMTP.