We have observed that the UW imapd is changing the ctime on mail folders
on every access, even when the folder is not modified. This ends up
causing a bad interaction with our incremental backups which are based
on ctime rather than mtime. For example, we have a number of users with
very large archived mail folders that haven't been modified in years.
However, they are frequently accessed for reading via imap. Every time
they are accessed, the ctime changes so they are being backed up during
the incremental backups.
I'm trying to understand why imapd would need to modify a folder's ctime
like this and to find out if I can make it stop doing this.
Thanks for your help!
--Rob
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