Hi, as the subject says:
I'm running a spamd-process on a dedicated server, with the clients running on
another machine. The load seems to be a little less than 1 mail/second, but
since the server is a 2 x Intel(R) Xeon(TM) CPU 2.40GHz, things seem to run
okay, most of the time.
But once in a while, I'm hit by large timeouts. Today I found this process:
UID PID PPID C STIME TTY TIME CMD
spamd 7873 27156 99 Oct11 ? 2-03:52:13 /usr/bin/perl5.8.0 -T -w
/usr/bin/spamd -L -m 20
Yes, thats more than two days of cpu-time. Notice the "-L" option; the process
isn't even using DNS, and so should not be hit by large timeouts. What on
Earth could it be waiting for?
Sometimes the processes only run for an hour or two, and then appearently
obtain whatever it is they are waitning for. Sometimes a lot of them
coincide, driving the load so high I have to reboot. NB: This behaviour
*seems* to be cured by the "-L" option, and maybe the "-m 20" option, but
still, the above process scares me a bit. And it'd like use DNS.
I know I can set timeouts for MX lookups and the like, but really I'd like
some kind of "master timeout" option, so that no spamd-forked process could
ever run for more than (say) 60 seconds. The spamc -client will allready have
timed out by then, anyway. Maybe I could insert "ulimit -t 60" somewhere
before the spamd master process forks of a "worker". Any thoughs on this?
I did find one interesting timeout culprit once: The domain "mymail2u.com" is
DNS'ed by these:
mymail2u.com. 172800 IN NS ns0.directnic.com.
mymail2u.com. 172800 IN NS ns1.directnic.com.
But they don't answer DNS-queries, (at least not mine). I can ping them,
though. Is this some kind of spammer trick, btw? Having your spam-domain
DNS-hosted by a defunct server will cause problems for a few SA users, it
seems.
So any From line, that contains that domain will require timouts. I had to set
check_mx_attempts 1, check_mx_delay 3 to get rid of that one.
Greetings, Ole
("Bloody wikings!")
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