Hi,

I've just completed a migration from Courier to a Dovecot 1.0.7 (patched RHE 5) which is working great, except for this weirdness of an issue that is impacting a handful of users. My question is that will turning off maildir_copy_preserve_filename help or hurt in a situation where there are multiple servers with their own local INDEX files (uidlist is shared)?

The problem is that a few users on a few versions of Microsoft Mail clients are not showing a few messages. They can see the messages just fine in webmail and other, more typical, E-mail clients.

I know that the right solution is to upgrade to 1.1.2 and use shared indexes. The plan is to upgrade in a month or so. In my defense, this setup was not of my making,

The two things issues that might have an impact are that we have shared (NFS) maildirs on multiple servers with their own local indexes and maildir_copy_preserve_file turned on. The uidlist (CONTROL) is shared and we have sticky connections turned on in our load balancer. The vast majority of clients do not have this issue. Quite frankly I have no idea these clients are ignoring the dovecot-uidlist.

Would turning off maildir_copy_preserve_filename help with this setup?

Another option might be easier is to delete the users INDEX and let the clients rebuild them.

Since this is only a handful of users and we are migrating to 1.1.2 anyway, my preference is to make the bare minimum of changes to help address this problem. The changes need not be perfect nor anytime more than a suggestion or preference. I just want to make things better for a little while.

Many thanks in advance.

---Jack

P.S. The performance improvement is amazing - anywhere from 2X to 12X depending on what metrics you are looking at. It isn't an apples to apples comparison since we upgraded the servers as well but the "old" servers are pretty powerful beasts.

-- Jack Stewart jstewart@caltech.edu / 626-395-4690 http://www.imss.caltech.edu