Handle SMTPRecipientsRefused in send_email

app/dashboard/views/mailbox_detail.py

@@ -15,6 +15,7 @@ from app.log import LOG
 from app.models import GenEmail, DeletedAlias
 from app.models import Mailbox
 from app.pgp_utils import PGPException, load_public_key
+from smtplib import SMTPRecipientsRefused
 
 
 class ChangeEmailForm(FlaskForm):
@@ -68,6 +69,7 @@ def mailbox_detail_route(mailbox_id):
                         + f"?mailbox_id={mailbox_id_signed}"
                     )
 
+                    try:
                         send_email(
                             new_email,
                             f"Confirm mailbox change on SimpleLogin",
@@ -86,7 +88,12 @@ def mailbox_detail_route(mailbox_id):
                                 mailbox_new_email=new_email,
                             ),
                         )
-
+                    except SMTPRecipientsRefused:
+                        flash(
+                            f"Incorrect mailbox, please recheck {mailbox.email}",
+                            "error",
+                        )
+                    else:
                         flash(
                             f"You are going to receive an email to confirm {new_email}.",
                             "success",