ERROR - Subscription Failure (Please Help!)

The report subscription is returning the following error message.
How should I resolve this issue?
However, according to the Job executed, the process was successful but the
report manager is displaying the following.
ERROR:
Failure sending mail: The report server has encountered a configuration
error. See the report server log files for more information.
Also, the event viewer is displaying the following error message well.Also, the event viewer is displaying the following error message well.
User: NT AUTHORITY\SYSTEM
Computer: REPORTSERV
Event Type: Failure Audit
Event Source: Security
Event Category: Logon/Logoff
Event ID: 529
Date: 11/30/2005
Time: 10:49:03 AM
User: NT AUTHORITY\SYSTEM
Computer: REPORTSERV
Description:
Logon Failure:
Reason: Unknown user name or bad password
User Name:
Domain:
Logon Type: 3
Logon Process: Authz
Authentication Package: Kerberos
Workstation Name: REPORTSERV
Caller User Name: NETWORK SERVICE
Caller Domain: NT AUTHORITY
Caller Logon ID: (0x0,0x3E4)
Caller Process ID: 5928
Transited Services: -
Source Network Address: -
Source Port: -
For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
"Terry" wrote:
> The report subscription is returning the following error message.
> How should I resolve this issue?
> However, according to the Job executed, the process was successful but the
> report manager is displaying the following.
> ERROR:
> Failure sending mail: The report server has encountered a configuration
> error. See the report server log files for more information.
> Also, the event viewer is displaying the following error message well.
>
>