On 2016-12-15 10:41:58 +0100, Sven Hartge wrote: > Next is a check if the sending IP resolves correctly and the hostname > resolves back to this IP. ^^^^^^^^^^^^^^^^^^^^^^^^ I wonder whether this rule should really be used. A hostname may resolve to multiple IP's, and for some reasons, the original IP may not be in the list (e.g. if truncated).
-- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)