When installing SP1 on Exchange Server 5.5, I get error 0xc0020534 - No
mapping between account names and security IDs. ...server.ins at or near
I have checked all Exchange services and verified they start with Service
Account (not System).
Nothing seems to help.
Then, in XADM, I get error trying to load extension.dll (SMTP) - No.
c1030ad1 - when trying to view SMTP connector.
Maill does appear to work though, but I am not sure if the SMTP relay issues