Added logging for sender email address on BotoServerError.

LMS-2734

common/djangoapps/student/views.py

@@ -1260,7 +1260,7 @@ def create_account(request, post_override=None):  # pylint: disable-msg=too-many
             else:
                 user.email_user(subject, message, from_address)
         except Exception:  # pylint: disable=broad-except
-            log.warning('Unable to send activation email to user', exc_info=True)
+            log.error('Unable to send activation email to user from "{from_address}"'.format(from_address=from_address), exc_info=True)
             js['value'] = _('Could not send activation e-mail.')
             # What is the correct status code to use here? I think it's 500, because
             # the problem is on the server's end -- but also, the account was created.
@@ -1584,7 +1584,7 @@ def reactivation_email_for_user(user):
     try:
         user.email_user(subject, message, settings.DEFAULT_FROM_EMAIL)
     except Exception:  # pylint: disable=broad-except
-        log.warning('Unable to send reactivation email', exc_info=True)
+        log.error('Unable to send reactivation email from "{from_address}"'.format(from_address=settings.DEFAULT_FROM_EMAIL), exc_info=True)
         return JsonResponse({
             "success": False,
             "error": _('Unable to send reactivation email')
@@ -1658,8 +1658,14 @@ def change_email_request(request):
         'email_from_address',
         settings.DEFAULT_FROM_EMAIL
     )
-
+    try:
         send_mail(subject, message, from_address, [pec.new_email])
+    except Exception:  # pylint: disable=broad-except
+        log.error('Unable to send email activation link to user from "{from_address}"'.format(from_address=from_address), exc_info=True)
+        return JsonResponse({
+            "success": False,
+            "error": _('Unable to send email activation link. Please try again later.')
+        })
 
     return JsonResponse({"success": True})