Redmine

I have a conflict between email receiving and email notification.
When I checked the "Issue Added", "Issue Updated" in the Administration->Setting->Email Notification, I can receive the email notification when an issue is added or updated. But I cannot create issue or update issue status from receiving email since an error in mail handler (Defect #31633).

When I unchecked the "Issue Added", "Issue Updated" in the Administration->Setting->Email Notification, I can create issue or update issue status from receiving an email. But there is no email notification is sent by email notification.

Do you have the same or similar issue? Any idea how to solve it? thanks.

Redmine environment:
Windows 2012
MS SQL Server 2016
Ruby 2.3 X64
Redmine 3.4.11

Thanks.