[Pdns-users] TCP Queries stop - can only fix with restart?

[bert hubert]

On Tue, Oct 18, 2005 at 02:07:35PM -0400, Matt Gibson wrote:

> We have about 130+ Windows boxes, that use IIS SMTP, which seems to
> ONLY query using TCP. They send mail, so queries for SMTP transactions is
> common, and there are also scripts that run on various sites which could 
> cause lookups

What happens, I think, is that you are 'leaking' TCP connections.

> Thanks a lot for helping us get to the bottom of this. I have a sneaky
> suspicion that it is entirely because of MS IIS SMTP servers doing all
> their lookups over TCP, but I could be wrong :)

Could be - but we need to fix this. Can you raise max-tcp-connections to 500
or so and see if the problem takes longer to occur?

Thanks.

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