postfix/postdrop: warning: uid=0: File too large

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NOTE added 2013-11-10: I think I found the cause. Read about it in this FreeBSD Forums post. I’ve seen seeing the following in the mail log for my imap server. The mail messages in question are the daily run and security run emails that go out from FreeBSD machines. They aren’t big. As shown above, you can see one was only 1157 bytes. What is curious about this setup: the imap server runs […]

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ZFS system hits high load during scrub

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My ZFS system hits a high load average every week during its scrub. Here is what top looks like after I pressed i and then S: last pid: 42049; load averages: 3.78, 3.26, 3.42 up 18+13:47:14 11:43:01 220 processes: 3 running, 216 sleeping, 1 waiting CPU: 7.5% user, 0.0% nice, 12.8% system, 1.2% interrupt, 78.5% idle Mem: 765M Active, 236M Inact, 8667M Wired, 17M Cache, 3284M Buf, 22G Free Swap: 8192M Total, 2404K

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named and forwarding

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In your named.conf, you will find this: I have always turned that on. I like to use my upstream hosts. Today, I turned it of, because of this: $ host lkjsdf lkjsdf has address 199.101.28.20 Host lkjsdf not found: 3(NXDOMAIN) What’s that IP address? That’s not relevant, but it is important. It’s the hostname of a web assistant engine. My upstream has decided to implement what I think is a dirty hack. I

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Creating a FreeBSD jail to run DHCP and DNS

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I’m in the process of setting up a new gateway/firewall. The new hardware will be faster and have more space. At present, the old firewall is also providing DHCP and DNS services. I want to move those off the gateway and onto another server. Why? I want the gateway to run only services that are related to gateway/firewall services. That keeps things simple. At present, the new firewall has just 43 packages installed.

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Dynamic DNS solutions: what have you used?

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I’m looking for a dynamic DNS solution. When connected to my home network, my laptop gets a static IP address. When it connects via OpenVPN, it gets a different IP address. I’d like the hostname updated to reflect the last used IP address. I run my own DNS servers at home, and all my hosts are in there. I am not sure that something like noip.com is what I want. I use that

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The new gateway configuration

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Today I created the new gateway machine. It is a ZFS-only system with 3x3TB drives in a mirror configuration. The hardware was my old ZFS workhorse, now replaced by something with more storage. I had a moment of panic, thinking this server had just one NIC, but I was wrong. em0 will be the local 1G LAN. re0 will have to be my upstream connection. That’s pretty sad, given it’s only a 10Mb

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