Author: David Woodhouse Date: To: exim-users CC: Dave Restall Subject: Re: [Exim] offers123.net & possible DOS.
ph10@??? said: > Exim is only going to do this if you have configured callbacks. In
> Exim 3, use sender_verify_callback_timeout to reduce the timeouts.
{For how long,} does Exim cache the result of such a callback?
If I do this on a box from which 3 people are subscribed to a list like the
linux-kernel mailing list, how many connections per day will it be making
to verify owner-linux-kernel@...?
