On 29.1.2011, at 19.05, Rob Browning wrote:
Oops, I accidentally added you to discard list rather than accept list :)
Timo Sirainen <tss@iki.fi> writes:
If you're only changing the standard maildir flags (not a..z = keywords) then you don't really need to lock anything. The uidlist locking could prevent a mail from being temporarily lost, but this happening is highly unlikely. http://wiki2.dovecot.org/MailboxFormat/Maildir#Locking explains.
I saw that, but I wasn't sure if the fact that a message might "receive a new UID" could be a problem.
It's a theoretical problem mostly, especially in your case. It's mainly visible when doing stress testing with large maildirs. I doubt in regular use it matters. Courier doesn't try to prevent it in any way and it seems to have worked mostly ok.
Or is the UID supposed to change when the flags change?
No.