Support for relaying mail.

Class DomainQueuer An SMTP domain which add messages to a queue intended for relaying.
Class RelayerMixin No class docstring; 1/5 methods documented
Class SMTPRelayer A base class for SMTP relayers.
Class ESMTPRelayer A base class for ESMTP relayers.
API Documentation for Twisted, generated by pydoctor at 2018-10-15 19:29:43.