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No Email Sent after Enabling Email Notifications

Environment

Pivotal Greenplum Database (GPDB) 4 and 5

Symptom

No email is being sent after enabling email alerts on Greenplum and even after testing.

Error Message:

There are no error messages and no confirmation that the email was sent.

Cause

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.

Resolution

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
ehlo domain.name
mail from:noreply-gcc@domain.com
rcpt to:someone@domain.com
data
This is a test, please do not respond
.
quit # Please note this dot before quit is important to finish the data section

Additional Information
Email Notifications not Generated for Greenplum Alerts

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