Prepare to resend messages later.

This errback function runs when no mail exchange server for the domain can be found.

ParametersfailureThe reason the mail exchange lookup failed. (type: Failure)
factoryA factory which can create a relayer for the mail exchange server. (type: SMTPManagedRelayerFactory)
domainA domain. (type: bytes)
Function setWaiting Undocumented
def setWaiting(queue, messages): (source)
Undocumented
API Documentation for Twisted, generated by pydoctor at 2020-03-20 23:54:06.