CPI Mail Exchang server configuraiton

Hi All,

We have CPI Integration flows in our clients for which we need to trigger Notification mails in case of errors.

CPI don't have Mail Exchange server rather we need to use Mail adapter to connect On-premise Exchange Server ( for which F/w needs to be opened which client is not allowed)

Could you confirm if by any other mechanism we could achieve this

HCI - --> (Should use mail exchange server) --->Land it to on-premise Relay server.

Best Regards
Suresh S