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Date:      Tue, 20 Feb 2001 12:56:31 -0600
From:      Dan Nelson <dnelson@emsphone.com>
To:        Len Conrad <LConrad@Go2France.com>
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: postfix: No buffer space available
Message-ID:  <20010220125631.A10827@dan.emsphone.com>
In-Reply-To: <5.0.0.25.0.20010220140218.02df9c10@mail.Go2France.com>; from "Len Conrad" on Tue Feb 20 15:28:32 GMT 2001
References:  <5.0.0.25.0.20010220140218.02df9c10@mail.Go2France.com>

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In the last episode (Feb 20), Len Conrad said:
> Sorry to bother you hackers again, but two submissions to -questions
> got no response so it looks like another scaleability issue on you
> people can handle :
> 
> ================
> 
> On a very busy postfix relay hub, we're seeing this:
> 
> Feb 19 15:00:16 imgate2 postfix/smtpd[323]: fatal: socket: No buffer space available
> Feb 19 15:00:17 imgate2 postfix/smtp[684]: fatal: socket: No buffer space available

I bet you're running out of mbufs.  If netstat -m shows either
'current' or 'peak' anywhere near 'max', you'll want to raise either
maxusers or "options NMBCLUSTERS" and rebuild your kernel.

-- 
	Dan Nelson
	dnelson@emsphone.com

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