lint fixes

smtp/server.go

@@ -10,17 +10,28 @@ import (
 	"gitlab.com/etke.cc/postmoogle/email"
 )
 
+const (
+	// NoUserCode SMTP code
+	NoUserCode = 550
+	// BannedCode SMTP code
+	BannedCode = 554
+)
+
 var (
+	// NoUserEnhancedCode enhanced SMTP code
+	NoUserEnhancedCode = smtp.EnhancedCode{5, 5, 0}
+	// BannedEnhancedCode enhanced SMTP code
+	BannedEnhancedCode = smtp.EnhancedCode{5, 5, 4}
 	// ErrBanned returned to banned hosts
 	ErrBanned = &smtp.SMTPError{
-		Code:         554,
-		EnhancedCode: smtp.EnhancedCode{5, 5, 4},
+		Code:         BannedCode,
+		EnhancedCode: BannedEnhancedCode,
 		Message:      "please, don't bother me anymore, kupo.",
 	}
 	// ErrNoUser returned when no such mailbox found
 	ErrNoUser = &smtp.SMTPError{
-		Code:         550,
-		EnhancedCode: smtp.EnhancedCode{5, 5, 0},
+		Code:         NoUserCode,
+		EnhancedCode: NoUserEnhancedCode,
 		Message:      "no such user here, kupo.",
 	}
 )