At 3:37 PM -0400 9/28/01, Forrest Aldrich wrote:

>  We're seeing a LOT of these types of errors lately:
>
>  Sep 28 14:50:18 machine popper[39052]: I/O error flushing output to 
> client someuser at nas-3-198.boston.domain.net [216.67.3.198]: 
> Operation not permitted (1)
>
>  enough to believe there is some problem going on.  I know for a 
> fact that this isn't isolated to just an Outlook (Lookout!) client, 
> some are using Eudora.
>
>  What could be causing this?   The machine is on a 100mbit link, but 
> our office accesses it via a T1 (which isn't that congested).
>
>
>  _F

You can try playing with the chunky-writes setting and see if that 
helps.  If not, I'd suggest Qpopper tracing or packet sniffing.

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