Solaris

I have created a custom nologin shell named nologinksh that looks like this.

#!/bin/ksh

DATE=`date |sed 's/:.. .*//'`
LAST=`last -1 |grep "$LOGNAME.*$DATE"`
if [ "$LAST" ]; then
echo "Remote logon is not permitted."
else
export SHELL=/bin/ksh
. $HOME/.profile
/bin/ksh
fi

The shell is setup so that the user can't log directly into the server but the acount can be "su'd" to and pick up the accounts environment settings. The script sources the users .profile but ignores the aliases in the file. It picks up all the other environment settings except for the aliases. However, once logged in if I manually source the .profile the aliases are picked up. Is there something else I need to add to the script for it to pick up the aliases as well??..I have a similar script for the c-shell and that script is almost identical and it picks up the aliases...Any insight would be greatly appreciated...Thanks..