Mike Schleif wrote:
Last week, a toaster that has been running flawlessly for many years was
overwhelmed by maybe a million messages to bogus users in a couple
hours.
Several days later, qmailctl queue still showed nearly a million queued
messages, ostensibly bounces directed primarily at yahoo.com.
Apparently, yahoo no longer likes our server, and is deferring
everything, which kept the queue jammed.
I added queuelifetime and set it to 10; but, that did not seem to have
any effect.
Finally, Sunday, I used John Simpson's qfixq, and eventually emptied the
queue with that. Also rebooted ...
So, the queue is empty and system load is back to normal.
However, clamd continues to intermittently grab all cpu and peg the
system. I prepended everything in simcontrol with "###" and redid
cdb's. Still, something clamd/spamd ???
Most important, users are complaining about intermittent inability to
_send_ email through this server. Other than occasional clamd spikes, I
do NOT see any diskspace, log nor network errors.
What am I missing?
What else to check?
Ideas?
Sounds like you know what you are doing more than I; however, I had
similar symptoms with users having periodic problems sending email
through my server. I had to bump up my
/var/qmail/control/concurrencyincoming up to 120 or so. Ever since
then, I haven't had any issues. It was a bugger to figure out, and I
think I had spikes in clamd all of the time too. You may want to give
it a shot.
John
