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Hi all! First, sorry my bad english.. I'm a old Debian user, and from some days, i note problem to access some sites (big sites!) from Brasil.. And, today, i looking better this problem, and see is occourred on DNS name resolution: This tests do at fresh machine install using Debian 9: root@bkp2:~# host walmart.com.br walmart.com.br has address 177.124.108.137 walmart.com.br mail is handled by 10 mx2.walmart.com.br. walmart.com.br mail is handled by 10 mx7.walmart.com.br. walmart.com.br mail is handled by 1 mx1.walmart.com.br. walmart.com.br mail is handled by 10 mx8.walmart.com.br. root@bkp2:~# host walmart.com.br 127.0.0.1 Using domain server: Name: 127.0.0.1 Address: 127.0.0.1#53 Aliases: walmart.com.br has address 177.124.108.137 walmart.com.br mail is handled by 10 mx7.walmart.com.br. walmart.com.br mail is handled by 1 mx1.walmart.com.br. walmart.com.br mail is handled by 10 mx8.walmart.com.br. walmart.com.br mail is handled by 10 mx2.walmart.com.br. root@bkp2:~# host walmart.com.br 8.8.8.8 Using domain server: Name: 8.8.8.8 Address: 8.8.8.8#53 Aliases: walmart.com.br has address 177.124.108.137 walmart.com.br mail is handled by 10 mx2.walmart.com.br. walmart.com.br mail is handled by 10 mx7.walmart.com.br. walmart.com.br mail is handled by 10 mx8.walmart.com.br. walmart.com.br mail is handled by 1 mx1.walmart.com.br. root@bkp2:~# All ok, but now: root@bkp2:~# host www.walmart.com.br ;; connection timed out; no servers could be reached root@bkp2:~# host www.walmart.com.br 127.0.0.1 Using domain server: Name: 127.0.0.1 Address: 127.0.0.1#53 Aliases: Host www.walmart.com.br not found: 2(SERVFAIL) root@bkp2:~# host www.walmart.com.br 8.8.8.8 ;; connection timed out; no servers could be reached root@bkp2:~# And, i'm not need say who is Walmart :-) This same problem occourred when access www.submarino.com.br and www.americanas.com.br, two other big e-commerce here. I try many things... chance my DNS server (PDNS-Recursor too Bind9), change DNS server, etc... And, here at office, i see some problem on four Debian 9 upgraded daily (like my notebook)... I'm stel trying find... but, if having help is better :-) [] s Tiago Oliveira de Jesus |