On 29 December 2010 22:35, Gregory Edigarov <g...@bestnet.kharkov.ua> wrote: > On Wed, 29 Dec 2010 16:22:33 +0530 > Girish Venkatachalam <girishvenkatacha...@gmail.com> wrote: > >> Dear folks, >> >> OpenBSD's spamd is a network level spam filter and consequently we >> need the MX records to point to spamd >> before it hits our mail server thereby achieving bandwidth protection >> as well as spam protection. >> >> This is really fantastic. >> >> Now the issue is this. >> >> Since MX records do not understand TCP port numbers, we cannot have >> different MX records point to different >> SMTP servers on the same IP address. >> >> The reason this is a problem is that assume that I have to run >> spamd(8) against 100 domains. Do I need to have >> 100 different IP addresses in my cloud? >> >> I hope the question makes sense. Sorry for sounding confusing. > > don't see the problem, > setup your mx records for all your zones to something like: > IN MX 10 mail > mail IN A 192.168.0.1 > > then make spamd listen on the address, and you're done. > > -- > With best regards, > Gregory Edigarov
This raises the PTR problem. Only one of those domains is going to have records that match forward and reverse? If not, some anti-SPAM gateways will drop. Shane
