hi, > > 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. regards, m