Issue
When starting Request Management Service on the same server that hosts SMTP in IIS 6 the SMTP service shuts down. After enabling this service on a server which also host SMTP the SMTP service along with IIS Admin service attempts to restart. IIS Admin service will resume after a few minutes but SMTP will not come back online causing issues with lazy approval.
Resolution
1)Restart SMTP. Once restarted the service seems to be stable
2) Move the SMTP server to machine that is not hosting Request Management Service