From 28dff65282404dd224b94e592da2f49788784d22 Mon Sep 17 00:00:00 2001
From: Fabrizio Steiner <stffabi@users.noreply.github.com>
Date: Mon, 22 Jan 2018 20:56:18 +0100
Subject: [PATCH] mail: only authenticate if user has been set.

---
 notifications/email.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/notifications/email.go b/notifications/email.go
index bb63329..6850ca9 100644
--- a/notifications/email.go
+++ b/notifications/email.go
@@ -81,7 +81,10 @@ func (e *emailTypeNotifier) sendEntries(entries []*log.Entry) {
 	// Do the sending in a separate goroutine so we don't block the main process.
 	msg := e.buildMessage(entries)
 	go func() {
-		auth := smtp.PlainAuth("", e.User, e.Password, e.Server)
+		var auth smtp.Auth
+		if e.User != "" {
+			auth = smtp.PlainAuth("", e.User, e.Password, e.Server)
+		}
 		err := SendMail(e.Server+":"+strconv.Itoa(e.Port), e.tlsSkipVerify, auth, e.From, []string{e.To}, msg)
 		if err != nil {
 			// Use fmt so it doesn't trigger another email.