dovecot - Apr 2006 - UIDL documentation

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

On Mon, 2006-04-17 at 16:56 -0400, Mark E. Mallett
wrote:
> 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.)
No, it's actually correct although it's not compatible with anything
else. The point is that %08Xv (== UIDVALIDITY) is always the same for
user's all mails (usually forever), so if there are some stupid clients
which truncate the POP3 UIDL value, it's safer to have %08Xu (== UID)
first. Outlook apparently in some situations truncates the UIDL which is
causing problems..
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
URL:
<http://dovecot.org/pipermail/dovecot/attachments/20060421/2607cc9f/attachment.bin>