From 5ffd1e04efcebb4b04769b54fe3c41030f84945b Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Mon, 3 Nov 2025 11:33:34 -0800
Subject: [PATCH] Fix send mail bug (#35834)

backport #35833
---
 services/mailer/sender/smtp.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/services/mailer/sender/smtp.go b/services/mailer/sender/smtp.go
index 8dc1b40b74..3207eee32f 100644
--- a/services/mailer/sender/smtp.go
+++ b/services/mailer/sender/smtp.go
@@ -128,7 +128,7 @@ func (s *SMTPSender) Send(from string, to []string, msg io.WriterTo) error {
 			return fmt.Errorf("failed to issue MAIL command: %w", err)
 		}
 	} else {
-		if err = client.Mail(from); err != nil {
+		if err = client.Mail(fmt.Sprintf("<%s>", from)); err != nil {
 			return fmt.Errorf("failed to issue MAIL command: %w", err)
 		}
 	}