From 251716bad60fe5aac3f5fc5c6412983046479bec Mon Sep 17 00:00:00 2001
From: Neeraj Gupta <254676+ua741@users.noreply.github.com>
Date: Fri, 23 Aug 2024 11:58:55 +0530
Subject: [PATCH] [server] Return 400 on invalid RCPT address

---
 server/pkg/utils/email/email.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/server/pkg/utils/email/email.go b/server/pkg/utils/email/email.go
index a19987a1d8..f3ddbe67b1 100644
--- a/server/pkg/utils/email/email.go
+++ b/server/pkg/utils/email/email.go
@@ -8,6 +8,7 @@ package email
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"html/template"
 	"net/http"
 	"net/smtp"
@@ -91,6 +92,9 @@ func sendViaSMTP(toEmails []string, fromName string, fromEmail string, subject s
 		auth := smtp.PlainAuth("", smtpUsername, smtpPassword, smtpServer)
 		err := smtp.SendMail(smtpServer+":"+smtpPort, auth, fromEmail, []string{toEmail}, []byte(emailMessage))
 		if err != nil {
+			if strings.Contains(err.Error(), "Invalid RCPT TO address provided") {
+				return stacktrace.Propagate(ente.NewBadRequestWithMessage(fmt.Sprintf("Invalid email %s", toEmail)), err.Error())
+			}
 			return stacktrace.Propagate(err, "")
 		}
 	}