From: Wietse Venema (wietseporcupine.org)
Date: Wed Nov 01 2006 - 13:32:41 CST

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Charles Gregory:
> I manually cleared some spam from the host6 queue and I noticed several
> pieces of the 'stuck' mail went through, then it 'hung' again. So I've
> just deleted some more and flushed the queue. Somehow, it is content
> dependent. And still stuck. All the remaining messages inthe queue look
> legit. So I'm not sure where to go now. Need to find that lock....

Find out what system call the process is blocking on.

See DEBUG_README for tips to

- make local(8) log more of its activity

- make a system call trace that will show where it blocks

- make a library call trace that will show where it blocks

        Wietse

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