This might be also related (I posted a message regarding this a while ago with no responce).
I noticed that dbmail-smtp in dbmail 1.0rc3 terminates with signal 11 (as per the postfix logs). At the time I was trying to dbmail to work with Solaris (SPARC) 8 and 9. When I installed it on a Intel Linux-based system (RH7.2), worked (and still works) without any problems. Hope this helps, I'm willing to provide additional details.. -- [EMAIL PROTECTED]