Infrastructure for relaying mail through a smart host.

Traditional peer-to-peer email has been increasingly replaced by smart host configurations. Instead of sending mail directly to the recipient, a sender sends mail to a smart host. The smart host finds the mail exchange server for the recipient and sends on the message.

Class ManagedRelayerMixin SMTP Relayer which notifies a manager
Class SMTPManagedRelayer An SMTP managed relayer.
Class ESMTPManagedRelayer An ESMTP managed relayer.
Class SMTPManagedRelayerFactory A factory to create an SMTPManagedRelayer.
Class ESMTPManagedRelayerFactory A factory to create an ESMTPManagedRelayer.
Class Queue A queue for messages to be relayed.
Class SmartHostSMTPRelayingManager A smart host which uses SMTP managed relayers to send messages from the relay queue.
Class SmartHostESMTPRelayingManager A smart host which uses ESMTP managed relayers to send messages from the relay queue.
Function RelayStateHelper Set up a periodic call to prompt a relaying manager to check state.
Class CanonicalNameLoop An error indicating that when trying to look up a mail exchange host, a set of canonical name records was found which form a cycle and resolution was abandoned.
Class CanonicalNameChainTooLong An error indicating that when trying to look up a mail exchange host, too many canonical name records which point to other canonical name records were encountered and resolution was abandoned.
Class MXCalculator A utility for looking up mail exchange hosts and tracking whether they are working or not.
Class _AttemptManager A manager for an attempt to relay a set of messages to a mail exchange server.
Function _checkState Prompt a relaying manager to check state.
def _checkState(manager): (source)

Prompt a relaying manager to check state.

ParametersmanagerA relaying manager. (type: SmartHostSMTPRelayingManager)
def RelayStateHelper(manager, delay): (source)

Set up a periodic call to prompt a relaying manager to check state.

ParametersmanagerA relaying manager. (type: SmartHostSMTPRelayingManager)
delayThe number of seconds between calls. (type: float)
ReturnsA service which periodically reminds a relaying manager to check state. (type: TimerService)
API Documentation for Twisted, generated by pydoctor at 2020-03-20 23:54:06.