courier

Documentation

Overview

Package courier implements various couriers for delivering messages.

Index

• type Courier
• type MDA
  • func (p *MDA) Deliver(from string, to string, data []byte) (error, bool)
• type SMTP
  • func (s *SMTP) Deliver(from string, to string, data []byte) (error, bool)

Types

type Courier

type Courier interface {
	// Deliver mail to a recipient. Return the error (if any), and whether it
	// is permanent (true) or transient (false).
	Deliver(from string, to string, data []byte) (error, bool)
}

Courier delivers mail to a single recipient. It is implemented by different couriers, for both local and remote recipients.

type MDA

type MDA struct {
	Binary  string        // Path to the binary.
	Args    []string      // Arguments to pass.
	Timeout time.Duration // Timeout for each invocation.
}

MDA delivers local mail by executing a local binary, like procmail or maildrop. It works with any binary that:

• Receives the email to deliver via stdin.
• Exits with code EX_TEMPFAIL (75) for transient issues.

func (*MDA) Deliver

func (p *MDA) Deliver(from string, to string, data []byte) (error, bool)

Deliver an email. On failures, returns an error, and whether or not it is permanent.

type SMTP

type SMTP struct {
	HelloDomain string
	Dinfo       *domaininfo.DB
	STSCache    *sts.PolicyCache
}

SMTP delivers remote mail via outgoing SMTP.

func (*SMTP) Deliver

func (s *SMTP) Deliver(from string, to string, data []byte) (error, bool)

Deliver an email. On failures, returns an error, and whether or not it is permanent.