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1[root@lenny ~]# for domain in forus.cl bolsadesantiago.com proxmox.com fmachile.org; do for a in 111 110 113; do echo -ne "192.168.0.$a;;$domain"; dig @192.168.0.$a $domain mx | grep "Query time" ; done; echo; done
2192.168.0.111;;forus.cl;; Query time: 6 msec
3192.168.0.110;;forus.cl;; Query time: 8 msec
4192.168.0.113;;forus.cl;; Query time: 7 msec
5
6192.168.0.111;;bolsadesantiago.com;; Query time: 5 msec
7192.168.0.110;;bolsadesantiago.com;; Query time: 0 msec
8192.168.0.113;;bolsadesantiago.com;; Query time: 0 msec
9
10192.168.0.111;;proxmox.com;; Query time: 431 msec
11192.168.0.110;;proxmox.com;; Query time: 1841 msec
12192.168.0.113;;proxmox.com;; Query time: 2073 msec
13
14192.168.0.111;;fmachile.org;; Query time: 148 msec
15192.168.0.110;;fmachile.org;; Query time: 2027 msec
16192.168.0.113;;fmachile.org;; Query time: 1154 msec
17
18[root@lenny ~]# for domain in ssmso.cl fach.mil.cl gmail.com hpe.com dx.com; do for a in 111 110 113; do echo -ne "192.168.0.$a;;$domain"; dig @192.168.0.$a $domain mx | grep "Query time" ; done; echo; done
19192.168.0.111;;ssmso.cl;; Query time: 10 msec
20192.168.0.110;;ssmso.cl;; Query time: 15 msec
21192.168.0.113;;ssmso.cl;; Query time: 13 msec
22
23192.168.0.111;;fach.mil.cl;; Query time: 10 msec
24192.168.0.110;;fach.mil.cl;; Query time: 9 msec
25192.168.0.113;;fach.mil.cl;; Query time: 12 msec
26
27192.168.0.111;;gmail.com;; Query time: 0 msec
28192.168.0.110;;gmail.com;; Query time: 3208 msec
29192.168.0.113;;gmail.com;; Query time: 810 msec
30
31192.168.0.111;;hpe.com;; Query time: 172 msec
32192.168.0.110;;hpe.com;; Query time: 172 msec
33192.168.0.113;;hpe.com;; Query time: 148 msec
34
35192.168.0.111;;dx.com;; Query time: 7 msec
36192.168.0.110;;dx.com;; Query time: 809 msec
37192.168.0.113;;dx.com;; Query time: 10 msec