install zimbra ubuntu6 probs

[ricardoz999]

Hi, I am trying to install zimbra i get the following errors

Checking for prerequisites...
NPTL...FOUND
sudo...MISSING
libidn...MISSING
curl...MISSING
fetchmail...MISSING
gmp...MISSING
/usr/lib/libstdc++.so.5...FOUND

###ERROR###

One or more prerequisite packages are missing.
Please install them before running this installer.

NOW I have typed the following

apt-get install curl fetchmail libpcre3 libgmp3c2 libexpat1 libxm12 libtie-ixhash-perl

and it says the newest version is already installed

[volksman]

There are a TON of posts about this already:

apt-get install libstdc++ (package name may be a bit off...but it will be something along those lines...Look up the package).