What's your LDA?
Aki
> On June 10, 2017 at 11:01 AM Peter West <li...@pbw.id.au> wrote:
>
>
> Thanks for that Aki.
>
> Follow-up question. I tried to initiate compression by adding
>
> mail_plugins = $mail_plugins zlib
>
> plugin {
> zlib_save_level = 6
> zlib_save = xz
> }
>
>
> to dovecot.conf. I restarted dovecot and sent one message to the server, and
> one message from the server. Neither was compressed. I changed the save
> type to
>
> zlib_save = bz2
>
> and repeated. This time the message received (in
> /var/vmail/<host>/<username>/cur) was not compressed, but the message in
> /var/vmail/<host>/<username>/.Sent/cur was bzip2 compressed.
>
> Why is the received mail not being compressed? Is this the point of the
> discussion about compressing old mails?
>
>
> > On 10 Jun 2017, at 4:43 pm, Aki Tuomi <aki.tu...@dovecot.fi> wrote:
> >
> >
> >> On June 10, 2017 at 5:58 AM Peter West <li...@pbw.id.au> wrote:
> >>
> >>
> >> Concerning Maildir, the wiki page on compression has this:
> >>
> >> All mails must have ,S=<size> in their filename where <size> contains the
> >> original uncompressed mail size, otherwise there will be problems with
> >> quota calculation as well as other potential random failures. Note that if
> >> the filename doesn’t contain the ,S=<size> before compression, adding it
> >> afterwards changes the base filename and thus the message UID. The safest
> >> thing to do is simply to not compress such files.
> >>
> >> Further down on the same page is this:
> >>
> >> If the file does exist, rename() (mv) the compressed file over the
> >> original file.
> >> • Dovecot can now read the file, but to avoid compressing it again on
> >> the next run, you'll probably want to rename it again to include e.g. a
> >> "Z" flag in the file name to mark that it was compressed (e.g.
> >> 1223212411.M907959P17184.host,S=3271:2,SZ).
> >>
> >> These comments seem to contradict each. Or is there a difference between
> >> adding the size specifier to the filename and adding a Z flag to the end
> >> of the file name?
> >>
> >> --
> >> Peter West
> >> p...@pbw.id.au
> >> And the great throng heard him gladly.
> >>
> >
> > Keyword is 'base filename'. From the wiki, "The standard filename
> > definition is: "<base filename>:2,<flags>".". Z is a flag.
> >
> > Aki
>
