In progress. We are more likely than not migrating from [[./Courier]] to [[http://wiki2.dovecot.org/|Dovecot]].

== Configuration Requirements ==

Not 100% certain, but to maintain file consistency the following looks OK:

{{{
mmap_disable = yes
mail_fsync = always
lock_method = flock
}}}

== Testing ==

 * `vos copy` all `mail.$user.backup` volumes and mount at `/afs/hcoop.net/common/mail2/...` for test migration
 * How to test under actual load?
   * Pick a mail volume (`mail.clinton` probably), clone as a vmail box, use procmail  to forward all mail to user to the vmail user, and copy the procmailrc for the vmail user?


== Migrating Data ==

 * http://wiki2.dovecot.org/Migration/Courier indicates it should be straightforward. Make sure to fully grok the conversion perl before running it on the actual Maildirs.
 * Primary risk is corrupting the UID database because there is no way to save a client after UID corruption
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CategorySystemAdministration