On 26 July 2016 at 09:53, Tony Finch <d...@dotat.at> wrote: > Ejaz <me...@cyberia.net.sa> wrote: >> >> I am not using iptable firewall from my redhat Linux box, all traffic >> manged by network team..
You might want to check whether the requests are legitimate before completely blocking them, rate limiting would be a better option. $ dig +noall +answer -x 212.107.121.110 110.121.107.212.in-addr.arpa. 3531 IN PTR mail1.alireza.com.sa. That IP address looks like it belongs to a mail server, and the alireza.com.sa zone is authoritative on your company's name servers, so it could be they have simply misconfigured their mailserver. $ dig +noall +answer alireza.com.sa NS alireza.com.sa. 3468 IN NS ns2.cyberia.net.sa. alireza.com.sa. 3468 IN NS ns1.cyberia.net.sa. Steve _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
