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
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