* Henrique de Moraes Holschuh (hmh@debian.org) wrote: > Since we are talking about it, it is not always trivial to special-case an > incoming connection for a local bounce instead of a SMTP-level bounce, > though. At least not with all MTAs. Using an MTA with the capabilities you need should be a prerequisite to running an MTA. > I can do so with postfix because I have a two-layer setup anyway (mail gets > twice through the system, for content filtering with extremely high input > rate. I just tell the first instance to let master through, and the second > one to reject -- this causes a *local* bounce, as mail is already queued and > accepted). I am not even sure if it can be done [in postfix] in a single > layer setup (smtpd->queues->MDA). Anyone would know how to do it? I expect you could do it though I havn't tried myself because I'm not a big fan of smtp-level rejects exactly for these reasons. I just accept and then discard (at least for known userids, but I don't expect many people to be setting up forwards for non-existant userids). I would have thought that at the least you could accept it, detemine it's SPAM and then have a procmail bounce-creating rule without all that much difficulty. Enjoy, Stephen
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