Not getting email notifications for new accounts

[mfo]

Hi,

After installing Mantis on the server edition, I've tried to register a new account. I can login with my
Administration account and standard password, but I don't get any mail which
should be sent by Mantis (Activation mail, reset password mail etc.!). This means,
I can't use any other account except Administrator...

The versions i have used on server:
OS: Windows Server 2008 Web Edition Trial
Mantis: mantis-1.1.2
MySQL:mysql-5.0.51b-win32

when i noticed this on the server i have deployed the mantis to the local system. Then it is working fine.
My local system Versions are:
MySQL: mysql-5
OS- Windows XP with SP3

am unable to findout the problem why it is not working on the Server edition and working on the local system. If the problem is with the config file or some other mantis files then it shouldn't work in the local system too, but it's working in local system.
So am thinking that the settings to be related to the server only. Can anyone help me out?
It's very urgent for me.
Do you have an idea how I could possibly fix this issue? Thanks a lot!

[regi24]

Is everything correct when you check it with http://localhost/Mantis/admin/check.php ??