CentOS Errata and Security Advisory 2006:0515
https://rhn.redhat.com/errata/RHSA-2006-0515.html
The following updated files have been uploaded and are currently syncing to the mirrors:
s390: updates/s390/RPMS/sendmail-8.12.11-4.RHEL3.6.s390.rpm updates/s390/RPMS/sendmail-cf-8.12.11-4.RHEL3.6.s390.rpm updates/s390/RPMS/sendmail-devel-8.12.11-4.RHEL3.6.s390.rpm updates/s390/RPMS/sendmail-doc-8.12.11-4.RHEL3.6.s390.rpm
s390x: updates/s390x/RPMS/sendmail-8.12.11-4.RHEL3.6.s390x.rpm updates/s390x/RPMS/sendmail-cf-8.12.11-4.RHEL3.6.s390x.rpm updates/s390x/RPMS/sendmail-devel-8.12.11-4.RHEL3.6.s390x.rpm updates/s390x/RPMS/sendmail-doc-8.12.11-4.RHEL3.6.s390x.rpm