On Mon, 31 Aug 2009 21:58:36 +0300 Pavel Gulchouck <[email protected]> wrote:
> On Mon, Aug 31, 2009 at 08:59:32AM +0900, Anthony G. Nickolayev writes: > > >> Is it possible to specify source interface for callout check? > > Be carefull with sender callout verification. Take a look at this > > http://www.backscatterer.org/?target=sendercallouts > > Thank you. > And what about resolving sender domain? Sending icmp echoreply, > icmp unreachable? Sending 25/tcp synack? ;-) > All this things can be used for DDoS-attacks. > I don't agree with the backscatterer.org point about callout. Whould you be agree or not, some large mail-servers could blacklist IP of your server based on this "scans". And i agree with such policy :) ---- -- Николаев Антон системный программист телематических служб ОАО "АК Мобилтелеком" +7-(3012)-29-70-21 [email protected] -- Anthony G. Nickolayev telematic services engineer JSC "AC Mobiltelecom" +7-(3012)-29-70-21 [email protected] -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
