ECOM-5281 Add retires for email sending while registering.

cms/envs/test.py

@@ -335,3 +335,6 @@ INSTALLED_APPS += ('openedx.core.djangoapps.api_admin',)
 # Set the default Oauth2 Provider Model so that migrations can run in
 # verbose mode
 OAUTH2_PROVIDER_APPLICATION_MODEL = 'oauth2_provider.Application'
+
+# Used with Email sending
+RETRY_ACTIVATION_EMAIL_MAX_ATTEMPTS = 5

common/djangoapps/student/views.py

@@ -1791,6 +1791,8 @@ def create_account_with_params(request, params):
             'email_from_address',
             settings.DEFAULT_FROM_EMAIL
         )
+        retries = settings.RETRY_ACTIVATION_EMAIL_MAX_ATTEMPTS
+        while retries:
             try:
                 if settings.FEATURES.get('REROUTE_ACTIVATION_EMAIL'):
                     dest_addr = settings.FEATURES['REROUTE_ACTIVATION_EMAIL']
@@ -1799,13 +1801,22 @@ def create_account_with_params(request, params):
                     mail.send_mail(subject, message, from_address, [dest_addr], fail_silently=False)
                 else:
                     user.email_user(subject, message, from_address)
+                # Log that the Activation Email has been sent to user without an exception
+                log.info("Activataion Email has been sent to User {user_email}".format(
+                    user_email=dest_addr
+                ))
+                break
             except Exception:  # pylint: disable=broad-except
+                retries -= 1
+                if retries <= 0:
+                    break
                 log.error(
                     u'Unable to send activation email to user from "%s" to "%s"',
                     from_address,
                     dest_addr,
                     exc_info=True
                 )
+
     else:
         registration.activate()
         _enroll_user_in_pending_courses(user)  # Enroll student in any pending courses

lms/envs/common.py

@@ -370,6 +370,9 @@ GENERATE_PROFILE_SCORES = False
 # Used with XQueue
 XQUEUE_WAITTIME_BETWEEN_REQUESTS = 5  # seconds
 
+# Used with Email sending
+RETRY_ACTIVATION_EMAIL_MAX_ATTEMPTS = 5
+
 
 ############################# SET PATH INFORMATION #############################
 PROJECT_ROOT = path(__file__).abspath().dirname().dirname()  # /edx-platform/lms