SMTP not working

[SKJoy]

Describe the issue
SMTP settings been set as per instruction but contact form notification is not being sent to admin emails.

To Reproduce
Steps to reproduce the issue:

1. Set SMTP settings in settings.py (as well in local_settings.py)
2. Restart MediCMS server
3. Go to MediaCMS Contact form and submit a message
4. Notification never received to the admin emails

Expected behavior
Contact form message notification should arrive at admin emails.

Environment (please complete the following information):

• OS: Ubuntu Linux
• Installation method: Single server install

Additional context

SMTP settings

EMAIL_HOST = "mail.smtp_server.com"
EMAIL_HOST_USER = "mediacms.test@smtp_server.com"
EMAIL_HOST_PASSWORD = "CORRECT_PASSWORD"
EMAIL_PORT = 587
EMAIL_USE_TLS = True
DEFAULT_FROM_EMAIL = "mediacms.test@smtp_server.com"
SERVER_EMAIL = DEFAULT_FROM_EMAIL
ADMIN_EMAIL_LIST = ["admin_1@domain.com", "admin_2@domain.com"]

Test information

• SMTP settings were tested with WebMail & Mail clients and been found 100% working.
• Tested with manage.py SHELL and the test succeeded, we received test emails

[SKJoy]

The SMTP configuration seemed to work after a server REBOOT! Is there a simpler way to reflect the configuration without a server reboot?