[Dovecot] POP3: Keep a copy on server failed ...

[Dominique Feyer]

I have this in my configuration:

protocol pop3 {
  pop3_enable_last = no
  pop3_uidl_format = %08Xu%08Xv
  pop3_client_workarounds = outlook-no-nuls, oe-ns-eoh
}

If I change the pop3_uidl_format I need to remove all the index file on
my server ? I read on the doc that this change cann't be done on a
production server ?

I have more than 10'000 accounts on this cluster so I can't have a big
downtime.

Thanks

Le lundi 17 juillet 2006 à 14:48 +0300, Dumitru Negara a écrit :
> Hi,
> 
> Dominique Feyer wrote:
> > I have a big problem with our cluster, if i read my mail with POP3
> > client (and check the option, keep a copy on server), every time I read
> > my mail, my client retrive ALL messages an the mailbox !!!
> >
> > I test this with:
> >
> > - Apple Mail 1.0 + 2.0
> > - M$ Outlook 2000 + 2003
> > - Thunderbird
> >
> > We use:
> > - Dovecot RC1
> > - Postfix on Debian Sarge (stable)
> >
> > Can you know this bug ? Or have a workaround ?
> >
> > This function is really important for our customer as we offer a backup
> > solution for her mails.
> >
> > Thanks
> >
> 
> It's probably just a configuration issue.
> 
> If you upgraded from dovecot 0.99 or maybe migrated from another 
> IMAP/POP3 server you should set correctly the "pop3_uidl_format" parameter.
> 
> I upgraded from 0.99 to 1.0.rc2 and below is my "pop3_uidl_format":
> 
>   # POP3 UIDL format to use. You can use following variables:
>   #
>   #  %v - Mailbox UIDVALIDITY
>   #  %u - Mail UID
>   #  %m - MD5 sum of the mailbox headers in hex (mbox only)
>   #  %f - filename (maildir only)
>   #
>   # 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.
>   #
>   #pop3_uidl_format =
>   pop3_uidl_format = %v.%u
> 
> This works fine even with Outlook 2000/2003. Clients (Thunderbird, OE, 
> Outlook 2000/2003) download just new mails.
> 
> Regards,
> Dumitru
> 
> 
-- 
Net4all S.A.
Dominique Feyer
Administrateur Système
Ch. de la Colline 5bis
CH-1007 Lausanne
dfeyer at net4all.ch