from sendmail.org

Sendmail, Inc., and the Sendmail Consortium announce the availability of sendmail 8.12.9. It contains a fix for a critical security problem discovered by Michal Zalewski whom we thank for bringing this problem to our attention. Sendmail urges all users to either upgrade to sendmail 8.12.9 or apply a patch for your sendmail version. Remember to check the PGP signatures of patches or releases obtained via FTP or HTTP (to check the correctness of the patches in this announcement please verify the PGP signature of it). For those not running the open source version, check with your vendor for a patch.

yes, this is a new version 3/29/03 to fix a different problem

also see CERT® Advisory CA-2003-12 Buffer Overflow in Sendmail