Big problem.. help...

Richard Lynch rich at MAIL.WVNET.EDU
Wed Nov 27 13:35:56 GMT 2002

On Wed, 2002-11-27 at 06:18, Julian Field wrote:
> These sorts of strange failures with big queues are often caused by you
> running out of filehandles. See what "ulimit -a" says (if "ulimit -a" fails
> then try "limit" as it varies between different shells), and try reducing
> the maximum size of a batch to 50 or 100 and see if the same problem occurs
> then.

I had already lowered the batch size to 100 based on your previous
posts.  I could try lower I guess.

> Max Unscanned Bytes Per Scan = 100000000
> Max Unsafe Bytes Per Scan = 50000000
> Max Unscanned Messages Per Scan = 100
> Max Unsafe Messages Per Scan = 100

ulimit -a

> core file size        (blocks, -c) 0
> data seg size         (kbytes, -d) unlimited
> file size             (blocks, -f) unlimited
> max locked memory     (kbytes, -l) unlimited
> max memory size       (kbytes, -m) unlimited
> open files                    (-n) 1024
> pipe size          (512 bytes, -p) 8
> stack size            (kbytes, -s) 8192
> cpu time             (seconds, -t) unlimited
> max user processes            (-u) 7168
> virtual memory        (kbytes, -v) unlimited

My whole setup is basically vanilla everything.  It's a dual PIII with 1
gig of memory.  The number of files in the queue is not all that big at
this point.  There are 924 total files (462 pairs) in the queue that
won't allow MS to start up.  When I rename that directory back to, MailScanner won't start.  I'm becoming convinced that some
particular mail file is causing the problem.  But, I'm no expert and
could be wrong about that.  K12 is out for their thanksgiving break
until next Monday so I'm not too concerned at the moment.  I intend to
investigate in more detail this weekend to see if I can determine which
file (or files) is causing the problem.  For now I'm going to have to
put it on the shelf until then.  I'll post a followup if I come up with
anything more definitive.

Richard Lynch <rich at>

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