Re: [SAGE] mirapoint?

[Doug Hughes <doug@eng.auburn.edu>]

On Sat, 15 Jan 2005, Brad Knowles wrote:

> At 7:10 PM -0500 2005-01-14, Dan Foster wrote:
>
> >  We also had issues with how the unit responded once the queue got large.
> >
> >  Can't really tell but it almost seemed like a single large queue because
> >  performance seemed to exponentially drop once the incoming queue got
> >  large enough.
>
> 	My understanding is that they were running a slightly modified
> version of sendmail, at least for a while, and this is a typical
> problem with older sendmail versions and newer ones if you don't
> configure them for a mail queue hashing scheme.
>
> >  A really large mailbox (245 MB, IIRC) also made performance crawl, too.
> >  It took a few hours to delete all the messages in that mailbox, as I
> >  seem to recall. :)
>
> 	ISTR that they were running a slightly hacked version of a fairly
> well known POP3/IMAP server (UW-IMAP?) and that it used 7th edition
> mbox format, which is known to have scaling issues once the mailboxes
> get large.

fwiw:
they definitely use a maildir format, and I'm pretty sure it's cyrus
based upon certain user interface features that are telling.

(obdisclosure: dan and I work at the same place)