Airflow - Email Notification not working with SES - airflow-scheduler

Question

I have created two Dag's to check the email configuration for Airflow.
Basically I want to get an email alert whenever a job is failed.
I have also gone through the following links but unfortunately, I am not able to resolve the problem.
Link 1
Link 2
DAG One: ( Success Job )
from datetime import datetime
from datetime import timedelta
from airflow import DAG
from airflow.operators.dummy_operator import DummyOperator
from airflow.operators.python_operator import PythonOperator
default_args = {
'owner': 'Airflow',
'depends_on_past': False,
'start_date': datetime(2015, 6, 1),
'email': ['firstnamelastname#company.com','firstnamelastname#company.com'],
'email_on_failure': True,
'email_on_retry': True,
'retries': 1,
'retry_delay': timedelta(seconds=5),
'email_on_success': True
# 'queue': 'bash_queue',
# 'pool': 'backfill',
# 'priority_weight': 10,
# 'end_date': datetime(2016, 1, 1),
}
def print_hello():
return 'Hello world!'
dag = DAG('success', description='Simple tutorial DAG',
schedule_interval='0 12 * * *',default_args=default_args,
start_date=datetime(2017, 3, 20), catchup=False)
dummy_operator = DummyOperator(task_id='dummy_task', retries=3, dag=dag)
hello_operator = PythonOperator(task_id='hello_task', python_callable=print_hello, dag=dag)
dummy_operator >> hello_operator
DAG Two : ( Failed Job )
from datetime import datetime
from datetime import timedelta
from airflow import DAG
from airflow.operators.dummy_operator import DummyOperator
from airflow.operators.python_operator import PythonOperator
default_args = {
'owner': 'Airflow',
'depends_on_past': False,
'start_date': datetime(2015, 6, 1),
'email': ['firstnamelastname#company.com','firstnamelastname#company.com'],
'email_on_failure': True,
'email_on_retry': True,
'retries': 1,
'retry_delay': timedelta(seconds=5),
'email_on_success': True
# 'queue': 'bash_queue',
# 'pool': 'backfill',
# 'priority_weight': 10,
# 'end_date': datetime(2016, 1, 1),
}
def print_hello():
xxxx
return 'Hello world!'
dag = DAG('success', description='Simple tutorial DAG',
schedule_interval='0 12 * * *',default_args=default_args,
start_date=datetime(2017, 3, 20), catchup=False)
dummy_operator = DummyOperator(task_id='dummy_task', retries=3, dag=dag)
hello_operator = PythonOperator(task_id='hello_task', python_callable=print_hello, dag=dag)
dummy_operator >> hello_operator
I was expecting to get an email for both of the jobs. Since both of the Jobs contains configuration for email_on_success and email_on_failure
But I did not receive any email.
Please have a look at the Job Run Stats :
Here is my SMTP Configuration under airflow.cfg :
smtp_host = email-smtp.ap-south-1.amazonaws.com
smtp_starttls = True
smtp_ssl = False
# Uncomment and set the user/pass settings if you want to use SMTP AUTH
smtp_user = XXXXXXXXXXXXXXXXXXX
smtp_password = XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
smtp_port = 587
smtp_mail_from = firstnamelastname#company.com
I have obtained the username and password from the Create My SMTP Credentials under the SES Service. I also have a verified email address. Security Group for my EC2 contains all outbound traffic for all protocol, all port and for destination 0.0.0.0/0
What else I am missing here?
Is it possible to configure/generate logs for the email sending process?