Hi,
I see this in the 1.0-beta7 dovecot-example.conf file:
# If you want UIDL compatibility with other POP3 servers, use: # UW's ipop3d : %08Xv%08Xu # Courier version 0 : %f # Courier version 1 : %u # Courier version 2 : %v-%u # Cyrus (<= 2.1.3) : %u # Cyrus (>= 2.1.4) : %v.%u # Older Dovecots : %v.%u # # Note that Outlook 2003 seems to have problems with %v.%u format which was # Dovecot's default, so if you're building a new server it would be a good # idea to change this. %08Xu%08Xv should be pretty fail-safe. # # NOTE: Nowadays this is required to be set explicitly, since the old # default was bad but it couldn't be changed without breaking existing # installations. %08Xu%08Xv will be the new default, so use it for new # installations.
and on the wiki at http://wiki.dovecot.org/Migration there is this:
By default Dovecot generates POP3 UIDs differently than UW-IMAP. If you want to preserve them, with 0.99.x you'll have to patch Dovecot. With 1.0-tests you can use:
pop3_uidl_format = %08Xv%08Xu
In the dovecot-example.conf file, it appears that the mentions of "%08Xu%08Xv" as being fail-safe and being the new default may be typos, since that format doesn't seem to come from anywhere. Should they not say "%08Xv%08Xu" ? (It'll still provide the same sort of unique value, only with the ends reversed; i.e. it should still work ok. But consistency and compatibility is nice.)
mm