Very Computer

I installed Exchange 5.5 on a new server on in our domain for evaluation as
a test organisation, leaving our 4.0 server untouched.  I then uninstalled
exchange 5.5, unplugged the 4.0 server from the network,  renamed the new
server(to the old server name, so that I don't have to change the clients)
and tried to reinstall 5.5.  However 5.5 will not reinstall

Any suggestions?

Here are more details of the problem:-
Existing scenario:
NT 3.51 with Exchange 4 and site connectors to 3 other sites - central
UK
server name \\ISLEWORTH (PDC).

Test:
As a test (of Exchange version compatibility) I installed Exchange 5.5
on a
new NT4  server called \\SERVER2 a BDC on our LAN.  I configured this
server
as part of our existing Exchange ORGANISATION but with a different SITE
name.  I was able to communicate between servers using the site
connector
and directory replication on both servers (Exchange 4 & Exchange 5.5).

Requirement:
Having tested this successfuly I then took steps to replace our existing

Exchange server with our new server.  To prevent me needing to change
the
remote servers and clients I promoted another server to PDC & took our
existing \\ISLEWORTH server off the network and renamed the new server
to
this name.  I then attempted to reinstall Exchange 5.5 to the same
server,
the only difference being a new server name.  This failed.

Failure Message:
Exchange setup installed all software and loaded most services OK.  When
it
got to the section entitled "Installing other services" the setup fails
as
it could not start Microsoft Exchange MTA service.  "The service did not

respond to  the start or control request in a timely fashion."
Setup could not continue, software was automatically removed.

I have a vaild exchange-service account set up in the domain and have
tried
removing the redundant services from the registry before reinstalling
but so
far I have been unable to identify the cause of this problem.  Could
there
be somewhere else in the registry where the previous server name is
being
stored and this is interfering with the new installation?

I have more detailed error messages and event log entries should you
require
them.

Since then I have removed all keys with references to 'exchange' or
'ESE97'
from the registry, installed NT4 sp3 again, promoted new \\isleworth to
a
PDC and rerun the setup (with the same result).

The exact error message I get is in a windows box entitled "MICROSOFT
EXCHANGE SERVER SETUP" the error text is "While attempting to start the
Microsoft Exchange Message Transfer service the following error was
encountered.
The service did respond to the start or control request in a timely
fashion.
Microsoft Windows NT
ID No: 0xc002041d

Here are more details of the problem:-
Existing scenario:
NT 3.51 with Exchange 4 and site connectors to 3 other sites - central
UK
server name \\ISLEWORTH (PDC).

Test:
As a test (of Exchange version compatibility) I installed Exchange 5.5
on a
new NT4  server called \\SERVER2 a BDC on our LAN.  I configured this
server
as part of our existing Exchange ORGANISATION but with a different SITE
name.  I was able to communicate between servers using the site
connector
and directory replication on both servers (Exchange 4 & Exchange 5.5).

Requirement:
Having tested this successfuly I then took steps to replace our existing

Exchange server with our new server.  To prevent me needing to change
the
remote servers and clients I promoted another server to PDC & took our
existing \\ISLEWORTH server off the network and renamed the new server
to
this name.  I then attempted to reinstall Exchange 5.5 to the same
server,
the only difference being a new server name.  This failed.

Failure Message:
Exchange setup installed all software and loaded most services OK.  When
it
got to the section entitled "Installing other services" the setup fails
as
it could not start Microsoft Exchange MTA service.  "The service did not

respond to  the start or control request in a timely fashion."
Setup could not continue, software was automatically removed.

I have a vaild exchange-service account set up in the domain and have
tried
removing the redundant services from the registry before reinstalling
but so
far I have been unable to identify the cause of this problem.  Could
there
be somewhere else in the registry where the previous server name is
being
stored and this is interfering with the new installation?

I have more detailed error messages and event log entries should you
require
them.

Since then I have removed all keys with references to 'exchange' or
'ESE97'
from the registry, installed NT4 sp3 again, promoted new \\isleworth to
a
PDC and rerun the setup (with the same result).

The exact error message I get is in a windows box entitled "MICROSOFT
EXCHANGE SERVER SETUP" the error text is "While attempting to start the
Microsoft Exchange Message Transfer service the following error was
encountered.
The service did respond to the start or control request in a timely
fashion.
Microsoft Windows NT
ID No: 0xc002041d

Here are more details of the problem:-
Existing scenario:
NT 3.51 with Exchange 4 and site connectors to 3 other sites - central
UK
server name \\ISLEWORTH (PDC).

Test:
As a test (of Exchange version compatibility) I installed Exchange 5.5
on a
new NT4  server called \\SERVER2 a BDC on our LAN.  I configured this
server
as part of our existing Exchange ORGANISATION but with a different SITE
name.  I was able to communicate between servers using the site
connector
and directory replication on both servers (Exchange 4 & Exchange 5.5).

Requirement:
Having tested this successfuly I then took steps to replace our existing

Exchange server with our new server.  To prevent me needing to change
the
remote servers and clients I promoted another server to PDC & took our
existing \\ISLEWORTH server off the network and renamed the new server
to
this name.  I then attempted to reinstall Exchange 5.5 to the same
server,
the only difference being a new server name.  This failed.

Failure Message:
Exchange setup installed all software and loaded most services OK.  When
it
got to the section entitled "Installing other services" the setup fails
as
it could not start Microsoft Exchange MTA service.  "The service did not

respond to  the start or control request in a timely fashion."
Setup could not continue, software was automatically removed.

I have a vaild exchange-service account set up in the domain and have
tried
removing the redundant services from the registry before reinstalling
but so
far I have been unable to identify the cause of this problem.  Could
there
be somewhere else in the registry where the previous server name is
being
stored and this is interfering with the new installation?

I have more detailed error messages and event log entries should you
require
them.

Since then I have removed all keys with references to 'exchange' or
'ESE97'
from the registry, installed NT4 sp3 again, promoted new \\isleworth to
a
PDC and rerun the setup (with the same result).

The exact error message I get is in a windows box entitled "MICROSOFT
EXCHANGE SERVER SETUP" the error text is "While attempting to start the
Microsoft Exchange Message Transfer service the following error was
encountered.
The service did respond to the start or control request in a timely
fashion.
Microsoft Windows NT
ID No: 0xc002041d