twisted.mail.interfaces.IMessageDelivery

def receivedHeader(helo, origin, recipients): (source)

Generate the Received header for a message.

Parameters
helo:2-`tuple` of `bytes` and `bytes`.	The argument to the HELO command and the client's IP address.
origin:`Address`	The address the message is from
recipients:`list` of `User`	A list of the addresses for which this message is bound.
Returns
`bytes`	The full `"Received"` header string.

def validateFrom(helo, origin): (source)

Validate the address from which the message originates.

Parameters
helo:2-`tuple` of `bytes` and `bytes`.	The argument to the HELO command and the client's IP address.
origin:`Address`	The address the message is from
Returns
`Deferred` or `Address`	`origin` or a `Deferred` whose callback will be passed `origin`.
Raises
`SMTPBadSender`	Raised of messages from this address are not to be accepted.

def validateTo(user): (source)

Validate the address for which the message is destined.

Parameters
user:`User`	The address to validate.
Returns
no-argument callable	A `Deferred` which becomes, or a callable which takes no arguments and returns an object implementing `IMessageSMTP`. This will be called and the returned object used to deliver the message when it arrives.
Raises
`SMTPBadRcpt`	Raised if messages to the address are not to be accepted.

Method	`receivedHeader`	Generate the Received header for a message.
Method	`validateFrom`	Validate the address from which the message originates.
Method	`validateTo`	Validate the address for which the message is destined.