> > i don't, but users do;) and they can do it via qmailadmin.
> So the solution is simple: somebody is responsible for that postmaster
> account. Tell him/her _not_ to set up a forward of that account to
> itself in qmailadmin. He/she shouldn't do that for _any_ account. A
> forward to the same address is _always_ a loop. If they insist in
> creating the loop I'd ask them to buy own hardware, so they can burn
> their own CPU.
it is very useful suggestion, but it doesn't work with ~30k domains (and
each domain owner is a postmaster). we can punish them, but we want
prevent this thing from happening.
it doesn't occur very often, but i think antiloop check should be
integrated into qmailadmin.