Workflow Email poll not working on secondary GPOAdmin server (4382021)

Workflow Email poll not working on secondary GPOAdmin server

In a scenario with two GPOAdmin Servers, one of the nodes does not receive email notifications from its Exchange mailbox. 

 

 In this case when using basic SMTP GPOADmin stores the data in the registry location HKLM/Software/Quest/GPOADmin/ServerConfig/Mail, while when using Exchange or GMail for notifications / workflow email using OAuth2 the information will be stored in the database in the ServiceOptions table which has one entry for each GPOADmin server sharing the database.

The issue is that username/password entries in the registry can be the issue, as one of them may have old, incorrect information. Removing these and reconfiguring it resolved the issue.

The Password registry key specifically is only written two possible times by GPOADmin. The first is when all of the other SMTP registry keys are set when the values are first set in GPOADmin options when setting up SMTP. The second case only the Password is updated. Whenever an email is to be sent we check the password value and if it is not an encrypted byte array, we will take the value from the registry, event if it is an empty string indicating no password, and will then encrypt that value as a byte array. This means that the empty password will now be an encrypted byte array containing and empty string. This is done so that the password always appears as an encrypted array even when no password is being used so that potential bad actors cannot tell that you are using no password.