On Sat, 12 Feb 2000, Carroll Kong wrote:
> At 07:17 PM 2/12/00 +0100, Brad Knowles wrote:
> >At 8:42 PM +0200 2000/2/10, Yiorgos Adamopoulos wrote:
> >
> >> You can use UW-IMAPD which comes with an IMAP and a POP3 server (imapd and
> >> ipop3d). If you want better performance than that of using the
> >> standard unix
> >> mbox format, then you should convert to the mbx format.
> >
> > Where would one find out information regarding the differences
> > between mbox format, mbx format, MH format, and Maildir format? I've
> > heard of three of these (mbx is new to me), and I think I'm familiar
> > enough with at least two of them, but I'm curious.
> >
> > In particular, I'm interested in finding out more about
> > performance of the various formats, and what kind of evidence there is to
> > back those claims up.
> >
> >
> > Thanks!
> >|o| Brad Knowles, <[EMAIL PROTECTED]> Belgacom Skynet NV/SA |o|
>
> mbox is probably the most popular, but not reliable. (one huge contiguous
> file for messages for a user).
> not sure on the others...
mbx is an indexed form of mbox. It is quite quick.
The biggest problem with mbox is that the entire mailbox needs to be
read to find the message boundaries. mbx doesn't have that problem
because it is indexed.
> Maildir is probably the most reliable and least popular. Every email
> message is broken into a file.
> http://www.qmail.org/man/misc/INSTALL.maildir.txt
>
> One big disadvantage with Maildir is since every message is a file, it
> takes up at least one inode. However, since harddrives are pretty cheap
> nowadays, I do not see this as a big deal at all. Another disadvantage is
> the "lack of support." So you are restricted in the pop3 you can use and
> the imapd you can use since you need one that understands Maildirs. There
> is some movements for support in these areas though.
Other maildir issues:
- Each message is rounded up to the nearest 1K (usual fragment size).
Again hard drive space is cheap.
- Opening a maildir mailbox with lots of messages takes time because each
file/message will have to opened
> -Carroll Kong
>
>
>
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>
Tom
Uniserve
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