ZONE : stegerudsteel.se.
NS <= : ns01.varberg.net. [217.73.100.11]
NS : ns02.varberg.net. [217.73.100.12]
_______________
,---------------.|
~~~~ | warning || ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
`---------------'
w> IP addresses are likely to be all on the same subnet
| Adv: ZoneCheck
| To avoid loosing all connectivity with the authoritative DNS in case
| of network outage it is advised to host the DNS on different networks.
|
| Ref: IETF RFC2182 (Abstract)
| The Domain Name System requires that multiple servers exist for every
| delegated domain (zone). This document discusses the selection of
| secondary servers for DNS zones. Both the physical and topological
| location of each server are material considerations when selecting
| secondary servers. The number of servers appropriate for a zone is also
| discussed, and some general secondary server maintenance issues
| considered.
`----- -- -- - - -
: All the servers are likely to be on the subnet 217.73.100.0/28, try
: moving some of them to another subnet.
`..... .. .. . . .
=> generic
w> Nameservers are all part of the same AS
| Adv: ZoneCheck
| To avoid loosing all connectivity with the authoritative DNS in case
| of a routing problem inside your Autonomous System, it is advised to
| host the DNS on different AS.
`----- -- -- - - -
: All the nameservers are part of the same Autonomous System (AS number
: 1257), try to have some of them hosted on another AS.
`..... .. .. . . .
=> generic
w> The postmaster can't be contacted by email
| Ref: IETF RFC1123 (p.51 5.2.7 RCPT Command: RFC-821 Section 4.1.1)
| A host that supports a receiver-SMTP MUST support the reserved
| mailbox "Postmaster".
`----- -- -- - - -
: Unable to send email to the postmaster address
: (postmaster@stegerudsteel.se.) using relays: mail.varberg.se.,
: mail.varberg.se..
`..... .. .. . . .
=> generic
==> SUCCESS (but 3 warning(s))
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