From b0bcc1d2d7e784b21de806a56af00ec2df0aa4dd Mon Sep 17 00:00:00 2001
From: Yonas Yanfa <yonas.y@gmail.com>
Date: Wed, 18 Sep 2024 20:52:40 -0400
Subject: [PATCH] Do not use plainAuth when no user or password. Fixes #3320

---
 internal/email/sender.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/internal/email/sender.go b/internal/email/sender.go
index 9db918f8a..412f55c3f 100644
--- a/internal/email/sender.go
+++ b/internal/email/sender.go
@@ -77,11 +77,18 @@ func NewSender() (Sender, error) {
 	port := config.GetSMTPPort()
 	from := config.GetSMTPFrom()
 	msgIDHost := config.GetHost()
+	var smtpAuth smtp.Auth
+
+	if (username == "" || password == "") {
+		smtpAuth = nil
+	} else {
+		smtpAuth = smtp.PlainAuth("", username, password, host)
+	}
 
 	return &sender{
 		hostAddress: fmt.Sprintf("%s:%d", host, port),
 		from:        from,
-		auth:        smtp.PlainAuth("", username, password, host),
+		auth:        smtpAuth,
 		msgIDHost:   msgIDHost,
 		template:    t,
 	}, nil