Andromeda wrote:
>
> At 12:41 19/07/2001 +0100, you wrote:
> >well, for me. it took 30+ seconds to clear the dead server.
> >For instance, if I telneted to port 25 on the afflicted server it took
> >30+ seconds to give me the usual prompt.
> >This tranlated into timeouts for all of our users and a build up of half
> >open connections on our server.
> >took out the dead server and boom, back to normal.
>
> That HARDLY constitutes useless. Besides, your users should be exempt from
> RBL lookup. If you have specific nets that are YOUR nets, I would strongly
> suggest you exempt them from RBL lookup. Am I repeating myself? I guess I do.
>
well if it won't respond within a reasonable time the build up of half
open connections goes over the to many concurrent connections limit and
whoops, server starts rejecting connections. so even if i exempted my
own address space, the amount of mail coming from the outside world
would swamp the server if it was takeing 30+ seconds to deal with each
connection.
> As far as Philip's suggestion goes, the logging of those two errors/return
> codes would be a BIG step towards identifying the problem without having to
> telnet to your port 25. You agree with me on that? I hope so.
my point exactly
>
> Regards
>
> Andromeda
>
> --
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Mark S. Guz
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