From the Dovecot 1.0.1 sample dovecot.conf file:
# If you want UIDL compatibility with other POP3 servers, use:
# UW's ipop3d : %08Xv%08Xu
...
# 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.
#
pop3_uidl_format = %08Xu%08Xv
Notice the *very* small difference in the format between UW's ipop3d
and the ones mentioned a little bit below?
I think I just got bitten by this (we moved from UW's ipop3d to
Dovecot). Loooots of users just got a lot of new (old) mail again
("Leave mail on server" is a popular setting). Ah well. They really
should move to IMAP anyway and now they got some summer reading to do
:-)
Is the difference intentional? If so then perhaps this should be more
clearly pointed out!
- Peter
On Thu, 2007-07-05 at 13:33 +0200, Peter Eriksson wrote:> # If you want UIDL compatibility with other POP3 servers, use: > # UW's ipop3d : %08Xv%08Xu> # 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. > # > pop3_uidl_format = %08Xu%08Xv> Notice the *very* small difference in the format between UW's ipop3d > and the ones mentioned a little bit below?IIRC, the difference is intentional -- I believe the stated reason was that the mail UID (%u) is more unique than UIDVALIDITY (%v), so the default format has the UID at the beginning just in case the client truncates the UIDL. -- Ben Winslow <rain at bluecherry.net> -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 827 bytes Desc: This is a digitally signed message part URL: <http://dovecot.org/pipermail/dovecot/attachments/20070705/bf014535/attachment-0002.bin>
Ben Winslow wrote:> On Thu, 2007-07-05 at 13:33 +0200, Peter Eriksson wrote: >> # If you want UIDL compatibility with other POP3 servers, use: >> # UW's ipop3d : %08Xv%08Xu...>> pop3_uidl_format = %08Xu%08Xv > >> Notice the *very* small difference in the format between UW's ipop3d >> and the ones mentioned a little bit below? > > IIRC, the difference is intentional -- I believe the stated reason was > that the mail UID (%u) is more unique than UIDVALIDITY (%v), so the > default format has the UID at the beginning just in case the client > truncates the UIDL.Drat. I wonder what would happen if I would change my pop3_uidl_format now again. I guess the POP3 users that have already downloaded their full INBOX again will be very happy. But perhaps it'll help preventing some of the BIG INBOX users that haven't already checked their mail a bit... Hm. I wonder how Eudora will handle this. - Peter