Internal Server error when registering

[Elmacik]

when i try to reigster a new user into my newly installed smf 1.0.5, it give an internal server error.
however the user is created, error page appears.
the cause may be the limitations of the server.
how can i prevent this?

[xenovanis]

Having problems with mod_security?

[[Unknown]]

This may also be caused by problems with sendmail.

-[Unknown]