autoexpunge - different settings for different users

[Timo Sirainen]

> On 07 Feb 2016, at 04:50, Tom Johnson <tj at terramar.net> wrote:
> 
> I have some users where I'd like to expunge their mail at different times.
> 
> For example, I may have some users who I want to expunge everything from every folder at 30 days.  
> 
> Others where I'd like to expunge everything at 90 days.
> 
> And still others where I only want to expunge mail from the Trash and Junk folders, and nowhere else.
> 
> Is there a way to do some sort of lookup for this?  Or is this beyond the ability of the autoexpunge feature?  Should I just use a cron job and use "doveadm expunge" on a user-by-user basis?

You can override any mail-related setting from userdb. So for example if you have:

namespace inbox {
  mailbox Trash {
    autoexpunge = 30d
  }
}

You can have your userdb return namespace/inbox/Trash/autoexpunge=90d extra field for other users. http://wiki2.dovecot.org/UserDatabase/ExtraFields has some examples.