Detecting last login IMAP and expire old messages

[Adam Tauno Williams]

On Mon, 2011-01-10 at 09:13 -0400, Patrick Boutilier wrote: 
> On 01/10/2011 08:03 AM, Adam Tauno Williams wrote:
> > On Sat, 2011-01-08 at 23:35 -0200, Lucas Zinato Carraro wrote:
> >> Is there a way to get messages from a user account automatic expire if
> >> account is not in used for 6 months ?
> > Yes, set the "expire" annotation on the folder.  For example, we set
> > this to 365 on the user's sent-mail folder and to 14 for the users SPAM
> > folder.
> But he only wants to expire messages if the user has not logged in in 
> the last 6 months.

Ah, my bad.

I suppose then it is really an authentication question and not a mailbox
question.  Hrm.... it would be nice to have a reliable and standard way
to determine when the last time user xyz was authenticated; but I'm not
aware of any such thing.