The server network address can not be reached or does not exist

Question

Hi all       
    When i am trying to configure Mirroring .i am getting the below error.
 The server network address "TCP://RDEEPA:5022" can not be reached or does not exist. Check the network address name and reissue the command. (Microsoft SQL Server, Error: 1418)
. TCP/IP and Name pipe connection is enabled in both principle and mirror server configuration.
I post the complete error message below ,which is in red  
TITLE: Database Properties
An error occurred while starting mirroring.
ADDITIONAL INFORMATION:
Alter failed for Database 'success'.  (Microsoft.SqlServer.Smo)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.1399.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Alter+Database&LinkId=20476
An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)
The server network address "TCP://RDEEPA:5022" can not be reached or does not exist. Check the network address name and reissue the command. (Microsoft SQL Server, Error: 1418)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.1399&EvtSrc=MSSQLServer&EvtID=1418&LinkId=20476
BUTTONS:
OK

Answer 1

Hi,
I have the same problem. However beginning over and over again and using other ports did not solve this unfortunately.
Here is the SQL I used to setup the mirroring.
* Principal DB
CREATE ENDPOINT [MirroringEndpoint]
    AUTHORIZATION [DOMAIN\administrator]
    STATE=STARTED
    AS TCP (LISTENER_PORT = 5022, LISTENER_IP = ALL)
    FOR DATA_MIRRORING (ROLE = PARTNER, AUTHENTICATION = WINDOWS NEGOTIATE
, ENCRYPTION = REQUIRED ALGORITHM RC4)
BACKUP DATABASE TEST
    TO DISK = 'C:\full-backup.bak'
    WITH FORMAT
BACKUP LOG TEST
    TO DISK = 'C:\log.bak'
ALTER DATABASE TEST SET PARTNER ='tcp://sql2.domain.local:5022';
* Mirroring DB
CREATE ENDPOINT [MirroringEndpoint]
    AUTHORIZATION [DOMAIN\administrator]
    STATE=STARTED
    AS TCP (LISTENER_PORT = 5022, LISTENER_IP = ALL)
    FOR DATA_MIRRORING (ROLE = PARTNER, AUTHENTICATION = WINDOWS NEGOTIATE
, ENCRYPTION = REQUIRED ALGORITHM RC4)
RESTORE DATABASE TEST
    FROM DISK = 'C:\full-backup.bak'
    WITH NORECOVERY
RESTORE LOG TEST
    FROM DISK = 'C:\log.bak'
    WITH FILE=1, NORECOVERY
ALTER DATABASE TEST SET PARTNER ='tcp://sql1.domain.local:5022';
The last statement on the principal server gives me the following error :
Msg 1418, Level 16, State 1, Line 1
The server network address "tcp://sql2.domain.local:5022" can not be reached or does not exist. Check the network address name and that the ports for the local and remote endpoints are operational.
From the principal server I'm able to ping the mirror server and can establish a telnet connection. When the statement gets executed even netstat gives me the following output :
TCP    0.0.0.0:5022           0.0.0.0:0              LISTENING       1244  [sqlservr.exe]
TCP    10.1.1.140:5022       10.1.1.110:1223       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1226       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1216       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1218       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1225       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1222       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1221       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1224       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1219       TIME_WAIT       0
TCP    10.1.1.140:5022       10.1.1.110:1220       TIME_WAIT       0
Is it normal so many ports get opened?
Any help would be greatly appreciated (as this drives me crazy :-( )
Found the problem eventually. The mirroring ran as the NT_AUTORITY user instead of DOMAIN\administrator.