Hi: I have one cliente using ispconfig and recive thousands spam mail dairy. When yours customers sending mail to they, mail server response: Server error: 451.4.3.0 <[email protected]>: Temporary lookup failure. How can full protect this server? Now perfom postsuper -d ALL, postqueue -p and 0 jobs, but when wait a few minutes news jobs in queue for same email sender. Is a valid mail user of system This account received until 90000 spam mails. Debian 6 Ispconfig 3.0.5.6 Any tool for activate a good antispam solution? Regards David Lagos S. Chile
I use blacklist from spamhaus.org and others. that works fine. on spamhaus.org you should find information how to configure it.
We have been using the Spamhaus ZEN now for some years, never any big problems with false positives, even though the ZEN is supposed to be pretty strict. Over the years I had to manually whitelist two IPs, but that's all. Some other related questions: - What are your setting for SPAMassasin for this client? - Do you use Greylisting? (Reduced the SPAM a lot for us)
