Francesco Abeni wrote: > Bowie Bailey ha scritto: > > Francesco Abeni wrote: > > > (...) I'd like to implement a "Bogus MX" ... > > > > I would say that it is too risky to put a non-smtp host as your > > primary MX. There are some servers which will have a problem with > > that setup and either be unable to deliver mail to you or delay the > > mail. > > Thank you Micheal and Bowie for your replies. > I think i'll go with setting up an "higher" priority bogus MX server > just in case it helps stopping some spam, since it won't cost me much. > > > Something else that can be useful is using an MTA blacklist. I use > > the zen.spamhaus.org blacklist on my MTA. (...) > > Using SpamAssassin, i think these checks should be already active. Am > i wrong? I checked 20_dnsbl_tests.cf, it contains spamhaus query as > well as other ones.
SpamAssassin uses this blacklist and others to determine if the message is spam. Putting the blacklist in the MTA allows the MTA to reject the connection before it even gets the chance to send the spam. This lowers the number of messages that your server (and SpamAssassin) needs to deal with. -- Bowie
