After configured SAPConnect for SMTP mail, we found the date time for sent out message is incorrect (time added 7 hrs). The problem should be incorrect time zone specified in the system. The system time zone is CET (which should be the default) and our local time zone should be UTC+8.
What is the impact on modify the time zone? The system has been up and run for many years. Will the timestamp of the change document became incorrect afterward. All end users and application servers are on the same time zone (UTC+8).