- Plesk for Linux
How the pc-remote milter works? Could it be safely removed?
Below is the typical structure of mail server with Postfix MTA.
The pc-remote here is essential for mail service on the server.
Note: the Postfix will not accept incoming messages and will not process the mail queue if this service is absent or down.
The Postfix connects to the pc-remote when the sender connects to the server before the message is saved into the mail queue, before the message is sent to a remote server and before the message is delivered to the local mailbox. Each time, Postfix submits the message to pc-remote and waits for a response.
- If the message passes all filters of a particular stage of mail delivery, the pc-remote gives it go and Postfix continues the delivery.
- If the message is matched by one of the filters, the pc-remote might tell Postfix to reject the message (e.g., when Postfix receives mail for a mailbox that is over quota, the pc-remote will reject the message), or will return the message to Postfix modified (e.g., with an added header).
Note: the pc-remote works only together with Postfix and will be automatically removed if the qmail installed.