Examples.

example_test.go

@@ -0,0 +1,48 @@
+package smtpd
+
+import (
+	"bitbucket.org/chrj/smtpd"
+	"errors"
+	"net"
+	"net/smtp"
+	"strings"
+)
+
+func ExampleServer() {
+
+	// No-op server. Accepts and discards
+	server := &smtpd.Server{}
+	server.serve()
+
+	// Relay server. Accepts only from single IP address and forwards using the Gmail smtp
+	server := &smtpd.Server{
+
+		Addr: "0.0.0.0:10025",
+
+		HeloChecker: func(peer smtpd.Peer) error {
+			if !strings.HasPrefix(peer.Addr.String(), "42.42.42.42:") {
+				return errors.New("Denied")
+			}
+			return nil
+		},
+
+		Handler: func(peer smtpd.Peer, env smtpd.Envelope) error {
+			return smtp.SendMail(
+				"smtp.gmail.com:587", 
+				smtp.PlainAuth(
+					"", 
+					"username@gmail.com", 
+					"password", 
+					"smtp.gmail.com",
+				),
+				env.Sender,
+				env.Recipients,
+				env.Data,
+			)
+		},
+
+	}
+
+	server.serve()
+
+}

protocol.go

@@ -343,7 +343,7 @@ func (session *session) handleAUTH(cmd command) {
 			return
 		}
 
-		username = string(parts[0])
+		username = string(parts[1])
 		password = string(parts[2])
 
 	case "LOGIN":

smtpd.go

@@ -1,4 +1,4 @@
-// Package smtpd implements a SMTP server with support for STARTTLS, authentication and restrictions on the different stages of the SMTP session.
+// Package smtpd implements a SMTP server with support for STARTTLS, authentication (PLAIN/LOGIN) and optional restrictions on the different stages of the SMTP session.
 package smtpd
 
 import (