21.13. smtpd — SMTP Server
This module offers several classes to implement SMTP servers. One is a generic
do-nothing implementation, which can be overridden, while the other two offer
specific mail-sending strategies.
21.13.1. SMTPServer Objects
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class smtpd.SMTPServer(localaddr, remoteaddr)
Create a new SMTPServer object, which binds to local address
localaddr. It will treat remoteaddr as an upstream SMTP relayer. It
inherits from asyncore.dispatcher, and so will insert itself into
asyncore‘s event loop on instantiation.
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process_message(peer, mailfrom, rcpttos, data)
- Raise NotImplementedError exception. Override this in subclasses to
do something useful with this message. Whatever was passed in the
constructor as remoteaddr will be available as the _remoteaddr
attribute. peer is the remote host’s address, mailfrom is the envelope
originator, rcpttos are the envelope recipients and data is a string
containing the contents of the e-mail (which should be in RFC 2822
format).
21.13.2. DebuggingServer Objects
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class smtpd.DebuggingServer(localaddr, remoteaddr)
- Create a new debugging server. Arguments are as per SMTPServer.
Messages will be discarded, and printed on stdout.
21.13.3. PureProxy Objects
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class smtpd.PureProxy(localaddr, remoteaddr)
- Create a new pure proxy server. Arguments are as per SMTPServer.
Everything will be relayed to remoteaddr. Note that running this has a good
chance to make you into an open relay, so please be careful.
21.13.4. MailmanProxy Objects
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class smtpd.MailmanProxy(localaddr, remoteaddr)
- Create a new pure proxy server. Arguments are as per SMTPServer.
Everything will be relayed to remoteaddr, unless local mailman configurations
knows about an address, in which case it will be handled via mailman. Note that
running this has a good chance to make you into an open relay, so please be
careful.
