I'm sure this is a very stupid question, but here goes anyway:

I'm migrating all e-mail to a Postfix/maildrop/courier-imap/sqwebmail platform. I have one machine running ok. It uses /etc/password for user database.

Now I'm bringing a second machine up. It is intended for virtual domain hosting. I believe I understand how to do this, but it looks like I have screwed something up in the config. My current problem is that maildrop will not deliver mail. When run from the shell it typically exists throwing a signal (e.g. "maildrop: signal 0x0B"). I don't see anything in any syslog file to tell me what's going on. The -V <level> option supposedly doesn't work in delivery mode.

So...question is what's the best way to determine why this maildrop isn't able to deliver messages ? Clearly something is going wrong somewhere, it just isn't clear to me what and where.

Thanks much.