24 lines
535 B
Go
24 lines
535 B
Go
package smtp
|
|
|
|
import (
|
|
"io"
|
|
)
|
|
|
|
// A SMTP server backend.
|
|
type Backend interface {
|
|
// Authenticate a user.
|
|
Login(username, password string) (User, error)
|
|
|
|
// Called if the client attempts to send mail without logging in first.
|
|
// Respond with smtp.ErrAuthRequired if you don't want to support this.
|
|
AnonymousLogin() (User, error)
|
|
}
|
|
|
|
// An authenticated user.
|
|
type User interface {
|
|
// Send an e-mail.
|
|
Send(from string, to []string, r io.Reader) error
|
|
// Logout is called when this User will no longer be used.
|
|
Logout() error
|
|
}
|