twisted.mail.mail.BounceDomain

def exists(self, user):

Raise an exception to indicate that the user does not exist in this domain.

Parameters	user	A user. (type: `User`)
Raises	SMTPBadRcpt	When the given user does not exist in this domain.

def willRelay(self, user, protocol):

Indicate that this domain will not relay.

Parameters	user	The destination address. (type: `Address`)
	protocol	The protocol over which the message to be relayed is being received. (type: `Protocol`)
Returns	`False`. (type: `bool`)

def addUser(self, user, password):

Ignore attempts to add a user to this domain.

Parameters	user	A username. (type: `bytes`)
	password	A password. (type: `bytes`)

def getCredentialsCheckers(self):

Return no credentials checkers for this domain.

Returns The empty list. (type: list)

Method	exists	Raise an exception to indicate that the user does not exist in this domain.
Method	willRelay	Indicate that this domain will not relay.
Method	addUser	Ignore attempts to add a user to this domain.
Method	getCredentialsCheckers	Return no credentials checkers for this domain.

twisted.mail.mail.BounceDomain class documentation