As if the problems I'm having getting the greylist daemon 64-bit clean and less Linux-centric weren't bad enough, today I find that the Sendmail client just stopped working. I checked the logs, and sure enough, the milter library is bitching up a storm:
Oct 31 17:32:08 XXXX smgl: Greylist Daemon: thread_create() failed: 12, try again Oct 31 17:32:44 XXXX last message repeated 5 times Oct 31 17:33:13 XXXX last message repeated 10 times Oct 31 17:33:17 XXXX smgl: Greylist Daemon, mi_rd_cmd: read returned -1: Connection reset by peer Oct 31 17:33:17 XXXX smgl: Greylist Daemon, mi_rd_cmd: read returned -1: Connection reset by peer Oct 31 17:33:17 XXXX smgl: Greylist Daemon: thread_create() failed: 12, try again Oct 31 17:33:50 XXXX last message repeated 13 times Oct 31 17:34:52 XXXX last message repeated 28 times Oct 31 17:35:54 XXXX last message repeated 34 times Oct 31 17:37:02 XXXX last message repeated 21 times Oct 31 17:38:05 XXXX last message repeated 7 times Oct 31 17:39:11 XXXX last message repeated 16 times Oct 31 17:40:20 XXXX last message repeated 7 times Oct 31 17:41:31 XXXX last message repeated 8 times Oct 31 17:41:50 XXXX smgl: Greylist Daemon: thread_create() failed: 12, try again Nov 1 12:22:53 XXXX smgl: Address: 127.0.0.1:0 Nov 2 19:25:21 XXXX smgl: Greylist Daemon: mi_stop=1 Nov 2 19:27:56 XXXX smc: Address: 0.0.0.0:0
mi_stop=1 doesn't look good; let me see what I
can find out about that:
On Tue, 27 Jul 2004, Matt Selsky wrote:
Jul 27 09:12:20 clover mimedefang: [ID 649295 mail.info] MIMEDefang-2.44: mi_stop=1
This is normal.
Lovely! Not only is it normal, but the only reference I found was dated 2004!
There was nothing at all about
mi_rd_cmd returning -1, but I
did find the following about the
thread_create() failed: 12:
On Thu, 28 Oct 2004, Stephane Lentz wrote:
PS: a folk running Linux reported a similar problem but he's not runing RH. On Mandrake/SuSE I've never seen it. How much traffic do you process ? Which hardware ? Try to get some recommendations on system tuning from RH since you're paying $$$$ .
Here's some free advice: On RHEL3, type “ulimit -s”:$ ulimit -s 10240
So each thread wants 10MB of stack space. That can chew up your RAM pretty quickly. I recommend editing the MIMEDefang startup script and putting:ulimit -s 2048
just before mimedefang (not the multiplexor!) is invoked.
Right now, the sample red hat script does it only if you have more than 100 slaves, but it should really do it unconditionally.
Sweet Jesus! No wonder the Sendmail client sucks up memory like there's no tomorrow! Sheesh!