[Exim] Exim and IBM DB2

Just got exim up and running. Now I'm looking to put most of my config files
into a db. I noticed that PGSQL amdn mySQL are supported... any ideas if
IBMs DB2 is supported by Exim. If so, any ideas where I can find some docs
or How To's. Looked all over and couldn't find any info.

Any help appreciated,
~jerry