Something I forgot to mention: when I first connected to themail server as raub using imap, dovecot created a few files. No problem with that. But they were owned by the user raub,
raub@mail $ ls -la /var/spool/vmail/flingingmonkey.com/raub total 32 drwxrwxrwx 5 virtual virtual 4096 May 26 16:23 . drwxr-xr-x 4 virtual virtual 4096 May 21 11:34 .. drwxrwxrwx 2 virtual virtual 4096 May 21 11:34 cur -rw------- 1 raub users 17 May 26 16:23 dovecot-uidlist -rw------- 1 raub users 8 May 26 16:23 dovecot-uidvalidity -rw------- 1 raub users 0 May 26 16:23 dovecot-uidvalidity.4a1c4fa9 -rw------- 1 raub users 140 May 26 16:23 dovecot.index.log drwxrwxrwx 2 virtual virtual 4096 May 21 11:35 new drwxrwxrwx 2 virtual virtual 4096 May 26 16:23 tmp raub@mail $
instead of user virtual, which is the account I have to own /var/spool/vmail and is known to dovecot as
virtual_uid_maps = static:1500 virtual_gid_maps = static:1500
Why is it doing that? Is that another clue that it think raub is a local user due to it being authenticated through pam?