Chris Petersen writes:
I've searched through the courier documentation online, but can't seem to find anything about how it sets up its tarpit (and/or what triggers it).
Someone has been running a dictionary-type spam attack (eg. joe@, bob@, martha@) on one of my wife's domains for the last few months, to the point where I'm now getting about 1 spam per second (enough to be annoying on my dsl line), and I'd like to find a way to tarpit all of these connections (they don't all come from the same IP all of the time, but do come in batches from the same place) -- or does courier already do this for unknown-user type errors?
Yes. Courier tarpits all SMTP errors, including user unknown. Check your mail logs.
But even with the tarpit in place you shouldn't be seeing so much crap coming through.
Unless you've installed a virtual domain alias catch-all.
pgpqljgr3AhVa.pgp
Description: PGP signature
