Mailstore on NFS.

[Paul Gargan]

Hi all,

We're trying to migrate our company mail setup to Kolab. We've lots of 
users, and they each have lots of mail (Microsoft Office attachments, etc).

Our existing mailstore is on a NetApp filer, mounted over NFS.

Kolab (or specifically, Cyrus) doesn't seem to like NFS.
Archive messages as far back as mid-2002 recommend against it:

http://lists.kde.org/?l=kroupware&m=103311336632230&w=2

http://lists.kde.org/?l=kroupware&m=105949348819830&w=2

My own testing reveals problems. Postfix will accept the mail, and 
dispatch it over LMTP. It gets written correctly to the NFS mounted 
directory (correct permissions, owner, etc) but Cyrus' index files don't 
seem to get updated properly.

When the mailbox is queried over IMAP, it correctly reports the number 
of mails, but trying to FETCH any ones that have been delivered when the 
spool was mounted on NFS returns a totally blank message.

We need to place the mailspool on the filer since it will grow very 
large. Having it on the filer also allows backups / snapshots, and 
permits quick recovery if the mail server dies (just drop in a 
replacement machine and point it at the NFS mailstore).

Questions:

Is there *any* way to make Kolab / Cyrus work with an NFS mounted spool?
If not, is there any Cyrus-compatible way to access a remote spool?

Thanks in advance,
Paul.