Gaby Vanhegan: > > On 19 Jun 2009, at 16:03, Wietse Venema wrote: > > > Jaroslaw Grzabel: > >> How do you imagine to create 45k users with 10-15k domains ? It's > >> faster > >> to create access lists/maps and filter everything. Creating something > >> like openrelay server but with stricts ACL. To defend I'm asking > >> simply > >> just only for a one rule which will exclude pipe from the address. > >> Anyway you have no other choice in such a solution as smart host is. > > > > reject_unverified_recipient automatically builds that access map for > > you. > > > Would it be considered "safe" to use this in a default > smtpd_recipient_restrictions? There's no caveats behind this one > other than possible delay in sending probes from the verify daemon?
It is much more expensive than looking in a local/relay/virtual recipient table, and does not work when you are "backup" MX for a system that is down. Wietse