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It will fail for certain DNS resolvers at this delegation: 3.0.0.0.5.1.0.c.5.0.1.0.0.2.ip6.arpa. 3600 IN NS wonderland.broker.freenet6.net. DNS server wonderland.broker.freenet6.net only has an IPv6 address: $ host wonderland.broker.freenet6.net wonderland.broker.freenet6.net has IPv6 address 2001:5c0:1400:b::9 When you do dig then you are asking your ...


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The PTR record is set by the owner of your netblock, usually the ISP serving the server in question. You will need to contact the owner and ask them to make the change. If you manage the public DNS for the netblock, you will need to add the PTR record to the appropriate zone file. How to do this depends on the DNS service in use. (However, your example does ...


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Here the complete picture of your email flow Zimbra webmail -> postfix -> amavis -> postfix -> internet Now, your email got stuck in queue because amavisd reject it. Why? Some background Amavisd in zimbra use policy bank to control who can telnet to amavisd daemon. When zimbra initialize configuration after installed, zimbra synchronize ...



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