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xinetd service limit errors
https://forum.linode.com/viewtopic.php?f=11&t=5034		 Page 1 of 1
Author:  AtomicDog [ Sun Jan 10, 2010 6:12 pm ]
Post subject:  xinetd service limit errors
I am running qmail which is being run by xinetd. When I setup my server initially, I allowed 25 smtp instances and had no issues. I then installed spamassassin, and everything still seemed OK.

Recently, however, I have been getting a lot of service_limit errors.

Code:
Jan 10 09:25:26 <hostname> xinetd[32723]: FAIL: smtp service_limit


I tried upping the instance limit to 30, but I am still getting these errors.

I also notice that there are a lot of sessions that are open for a very long time.
Code:
Jan 10 16:00:40 <hostname> xinetd[32723]: START: smtp pid=19885 from=77.48.174.2
Jan 10 16:01:12 <hostname> xinetd[32723]: EXIT: smtp status=1 pid=19885 duration=32(sec)


These all seem to be failed SMTP sessions that I am rejecting. (I am using the validrcpto patch.)

I have a couple of questions about this:
Why are these sessions taking so long?
What are the recommended number of instances for smtp I should use?

Thanks.
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