I saw before you said it was bad netiquette to post a private message in a public place, but I think this is okay. If not, please let me know. I am not very familiar with forum protocol.
1) Any errors would show up in /var/log/directadmin/errortaskq.log regarding the mbox conversion process.
2) The mbox spam files?
cd /home/
username/.spamassassin
rm -rf user_spam
as the user spamboxes with dovecot are under that users maildir.
3)
http://help.directadmin.com/item.php?id=156
4) Hmmm.. I havn't tried this with dovecot.. you could try creating a symbolic link:
cd /home/
username/Maildir
ln -s /home/
username/imap/
domain.com ./.domain.com
But I'm not sure if that works in dovecot/Maildir or not.
I received his help, and everything seemed to work except suggestion for item 4.
I think maybe I was unclear. So for clarity, and the benefit of others on the forum this is what I meant, note items 1, 2, & 3 are seem to be resolved.
1) I was referrig to an error log, or something to convince me the install went okay. Found here:
/var/log/directadmin/errortaskq.log
2) I was referring to the extra boxes created by a catchall. When in mbox format, they were just files, that can be deleted by DA. It appears that DA can't remove un-empty directories (maybe a new feature someday?). Also, I should have removed them before the conversion. Since I didn't, the conversion made them folders (exactly what the conversion should have done), which weren't deleteable from withing DA
3) The steps supplied here:
seemed to work. I just didn't want to have to log in as root and manually delete those folders anymore.
4) Before the conversion, when I logged in to squirrelmail as the main user, I was able to "subscribe" to the entire domain of email accounts, and see everybody's inboxes. After the conversion I was not. This was nice for business collaboration.