You can use formmail, but please read the following:
Matt Wright's FormMail is a very common form processor that many of our
clients install rather than using the clone we provide. If you do this,
please observe the following VERY IMPORTANT security note.Spammers
look for "exploitable formmail" and then can forge headers to send SPAM
from your domain through the FormMail script. Unless you have properly
secured the script, you are vulnerable.
To ensure that you are not hit, modify the @recipients parameter as follows:
@recipients = &fill_recipients('domain.com','sub.domain.com','another.com');
...listing
any domain that you wish to be able to receive mail through your
formmail script. This should be done in addition to the @referrer line
which you modified to get the form working.
Detailed configuration instructions for the original FormMail.pl can be found here:
http://www.scriptarchive.com/formmail.html
NOTE: For those users who are using the formmail clone we provide through CPanel, this has been taken care of for you.