[mdlug] Quotas. How do they work?

[Adam Tauno Williams]

On Tue, 2011-03-29 at 11:20 -0400, Mark Montague wrote:
> On March 29, 2011 11:07 , "Robert Adkins II" <radkins at impelind.com> 
> wrote:
> > Two of the users in question receive hundreds of megabytes of data and also
> > forward to other users inhouse and out that are also into the hundreds of
> > megabytes.
> > This can quickly become an unmanageable situation.
> What size limit are you imposing on individual messages?  UofM imposes a 
> limit of 100 MB for a single SMTP mesage, which, taking MIME encoding 
> losses into account means that users can generally send a message with 
> at largest a single 67 MB attachment.
> Do you have duplicate delivery suppression enabled on your IMAP server?  

+1 This can be a huge win.

Another possible solution is to use [block-level] deduplicating storage.
A variety of SAN & NAS devices support deduplication these days.  The
reduction in storage requirements can be mind-blowing.    Or if you are
brave mount your mail store on a LessFS filesystem [which does block
level deduplication].