[Dovecot] Automatically Cleaning Kerberos Credential Cache Files

[Timo Sirainen]

On Tue, 2012-12-11 at 19:13 -0800, Joseph Tam wrote:
> Ben Morrow writes:
> 
> > In any case, it's likely that the delivery process looks in the user's
> > home directory even if delivery is to a separate mail spool, unless
> > you've taken steps to prevent this.
> 
> I can confirm this.  I think the reason is that dovecot changes to the
> user's home directory so that it has a place to dump core.  This causes
> problem for my setup since I user per-user NFS mounts, so a delivery to an
> internal mailing list caused hundreds of NFS automounts.
> 
> I patched this behaviour out, but there is probably a more elegant solution
> (unset MAIL_STORAGE_SERVICE_FLAG_ENABLE_CORE_DUMPS? How?).

If there is a home directory, Dovecot chdirs there. Maybe you can avoid
returning a home directory? Of course that causes some other trouble
then. A new mail_home_chdir=no setting would of course work, but kind of
annoying to have such setting..