Here are my RPMS for the latest Sendmail 8.13.8 which includes the MySQL and Postgres patches found at http://www.orenet.co.uk/opensource/sendmail-sql/ . This adds a database backend to Sendmail for virtually every map (aliases, virtual user table, etc). Implementing this is a bit scary and should not be left to newbies, I guess.

I built these packages because I have not noticed any updates on the original site where it was posted. This version is built around the latest Redhat RPM spec, because it seems they evolved a bit differently than the ORE packages.
sendmail-8.13.8-1.isoc.i386.rpm
sendmail-cf-8.13.8-1.isoc.i386.rpm
sendmail-doc-8.13.8-1.isoc.i386.rpm
Source RPM: sendmail-8.13.8-1.isoc.src.rpm

Update 17 July 2006: It has been reported that the packages may not run on all systems, as they were built around MySQL 5.0. libs. Researching …

Update 10 August 2006: The RPMs were updated for Sendmail 8.13.8

Update 1 September 2008: These page and related files are kept here for historical purposes. I do not maintain neither the source nor the RPMs.