error initializing ch_ facility no room in. . .

This error message generally means that you need to resize your MTA character set internal tables and then rebuild the compiled character set tables with the following commands:

imsimta chbuild -noimage -maximum -option
imsimta chbuild

Verify that nothing else needs to be recompiled or restarted before making this change. Refer to imsimta chbuild in Sun Java System Messaging Server 6 2005Q4 Administration Reference for more information on imsimta chbuild.