Pivotal Greenplum Database (GPDB) 4 and 5
No email is being sent after enabling email alerts on Greenplum and even after testing.
There are no error messages and no confirmation that the email was sent.
This can be caused when the SNMP server does not refuse the request but has a policy in place to disallow an email to be sent.
This is environmental and is solved by fixing the Simple Network Management Protocol (SNMP) or the email server side.
A good way to verify if the connection and configuration of the SNMP server are correct is to test with Telnet. With Telnet, users can also test the email facility using the following:
telnet 'SNMP server ip address' 25
This is a test, please do not respond
quit # Please note this dot before quit is important to finish the data section
Email Notifications not Generated for Greenplum Alerts