Slow access to RBLs?

[Antony Stone]

On Thursday 09 October 2003 10:24 am, Stanier, Alan M wrote:

> Yesterday email starting running extremely slowly, with messages
> accumulating in the Incoming Queue Directory
>
> Messages in /var/adm/maillog showed problems with RBL checking ...
>
> I disabled RBL checking, and email started running at full speed again.
>
> It seems infeasible that all the RBLs we check should have developed
> problems simultaneously, so the problem is presumably local, but I can't
> think where. The network team here assure me they have made no changes
> which might have such an affect.

DNS is the thing to check - especially any non-responding servers which are
listed high in your /etc/resolv.conf

Antony.

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