dbmail-mysql 2.2.17-1 (i386 binary) in ubuntu natty

 DBMail is a collection of programs that allow the use of a relational
 database to store both email messages and user account data. It
 supports Sieve filtering, and the client protocols POP3, IMAP4, LMTP,
 and ManageSieve.
 .
 This package provides a module for adding MySQL database support.