* Robert Schetterer <r...@sys4.de>:
> Am 13.02.2013 05:13, schrieb Marc Perkel:
> > I'm thinking about setting up to do nightly mass checks and looking for
> > advice. Thanks in advance.
> > 
> > I'm thinking about creating a virtual server that will receive a forked
> > copy of email that I pass that is delivered eith to ham@ or spam@
> > accounts. Does this sound reasonable? I have been using maildir format.
> 
> i wouldnt do that, more the filter spam mails in users junk folders isnt
> needed ( use a global sieve rule ) additional i.e create some public
> imap folder for users copy untagged spam there, and some folder for
> false positve tagged ham ( or configure some email adresse ham/spam
> postfix transport. ( dont complete trust users about spam their meaning
> ! ) What mailbox format you might choose
> is academic, with maildir you have every mail one file, very robust but
> get a performance killer someday, dovecot mdbox union stuff from both
> formats, might best choice

I'd concur with Robert if it wasn't for a little detail: AFAIK sa-learn can
only handle mbox or maildir so you can't use any of the other, more optimized
mailbox formats Dovecot supports such as mdbox.

Since you run on SSD maildir shouldn't be a real performance problem. We're
about to do some speed testing in this area within the next months, but the
testbed hasn't been setup yet, so I can't give a definite advice.

> > I am going to be running on SSD drives. should I use mbox?

Test it and let us know. Switching between mailbox formats is done within less
than a minute in Dovecot.

p@rick

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