Date: Sun, 7 Aug 2016 14:17:35 -0700 From: Doug Hardie <doug@mail.sermon-archive.info> To: Niklaas Baudet von Gersdorff <me@niklaas.eu> Cc: freebsd-questions@freebsd.org Subject: Re: Need advice for setting up mail server Message-ID: <44D296EC-FA25-4279-9501-8BB6B2DD86A6@mail.sermon-archive.info> In-Reply-To: <20160807180149.GC12411@len-t420.klaas> References: <VI1PR02MB0974A0FB1361638BDD437043F61A0@VI1PR02MB0974.eurprd02.prod.outlook.com> <2394887a809b4ad8e702d1d13bb1337c@mail.zplay.eu> <20160807180149.GC12411@len-t420.klaas>
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> On 7 August 2016, at 11:01, Niklaas Baudet von Gersdorff = <me@niklaas.eu> wrote: >=20 > What I can highly recommend is mail/spamd. I learned about it in > the FreeBSD Handbook. However, documentation there seems a bit > old so it's not longer correct. Spamd offers greylisting too but, > as mentioned above, there are reasons not to enable that. > However, you can also run it in blocking mode solely. This way it > collects updated entries on malicious hosts that you can pipe to > PF and block with your firewall. Very resource-friendly. Read > spamd(8) for how to configure it properly (and don't trust the > handbook on it). I am running spamd (obspamd last time I checked) on the mail server for = a medium sized ISP. It has never worked the way the documentation = describes. However, it has been useful. When I first installed it, = around 90% of the email being received was dropped. It blocks drive-by = spammers who don't queue and retry on TMP_FAILs. Unfortunately, it = appears that many spammers now can afford the disk and processor = resources to enable queueing and retrying so its usefulness is = diminishing. The issue that has bugged me with it is that it does not deliver the = email that causes the site to be whitelisted. You have to wait for it = to try yet another time to actually get it. The small business mail server does not have that implemented at this = time. I hope to avoid it, but will have to see what happens in the = future.
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