On 29 December 2010 22:47, SJP Lists <[email protected]> wrote: > On 29 December 2010 22:35, Gregory Edigarov <[email protected]> wrote: >> On Wed, 29 Dec 2010 16:22:33 +0530 >> Girish Venkatachalam <[email protected]> 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.
Sorry, what I meant to say, is "If so, some anti-SPAM gateways will drop connections that don't match forward and reverse".
