[Dovecot] Major bug with hardlinks and lmtp

In working on trying to fix the crash issue from my last email I had enabled LMTP delivery to try it out instead of using the LDA.

I have discovered that when a single piece of email is to be delivered to multiple users the message is being hard linked instead of copied into each mail box. This is a major problem that makes LMTP unusable in an environment where each mailbox has it's own UID since the hard linked file will only be readable by one of the users.

I assume this is related to "maildir_copy_with_hardlinks=yes", however this setting doesn't say anything about hardlinking across different email accounts.

-- Brad Schuetz