Please note the path may differ with respect to the application installed or configured (IIS)
SMTP log files
C:\WINDOWS\system32\LogFiles\SMTPSVC1
Webalizer other statistics logs
IIS -> domain -> website -> right click -> open -> You can find account name / logs
ex: e:\billgates\logs
e:\billgates\microsoft.com
IIS logs
IIS -> domain -> properties -> Website -> properties -> Log file directory -> ex: c:\logfiles\www
FTP logs
c:\logfiles\ftp
