DNS stuff (bind cfg and theory)

[Ovidiu]

still some more questions and errors:

question:

MX 10 mail.

zice.ro. A 81.169.176.18
www A 81.169.176.18
mail A 81.169.176.18

Does that look right? Or should it be like this:

MX 10 mail.zice.ro

zice.ro. A 81.169.176.18
www.zice.ro A 81.169.176.18
mail.zice.ro A 81.169.176.18

errors:

have a look at the recent changes of the report here: http://www.dnsreport.com/tools/dnsre...domain=zice.ro

###edit###

I found out this is right:

MX 10 mail

zice.ro. A 81.169.176.18
www A 81.169.176.18
mail A 81.169.176.18
* A 81.169.176.18

but now I stumbled upon the SPF records, found a wizard here: http://www.openspf.org/wizard.html?m...lt_from_args=1

but the results differ from the results of ispcfg.

The wizards results:

Paste this into your zone file:

zice.ro. IN TXT "v=spf1 a mx ~all"
So this should also appear in DNS. You may or may not be in charge of the DNS for these entries; if you are, add them.

h5810.serverkompetenz.net. IN TXT "v=spf1 a -all"
mail.zice.ro. IN TXT "v=spf1 a -all"

while ispcfg comes up only with this:

mail.zice.ro. IN TXT "v=spf1 a mx ~all"

Sorry for all these, maybe dumb, questions but once I stumble opun a thing I can't rest until its (perfectly) finished ;-)

Btw. does anyone here use a DNS provider he can recommend?

[falko]

It can be

MX 10 mail.zice.ro.

zice.ro. A 81.169.176.18
www.zice.ro. A 81.169.176.18
mail.zice.ro. A 81.169.176.18

(note the dot at the end of each FQDN!!!)

or

MX 10 mail

zice.ro. A 81.169.176.18
www A 81.169.176.18
mail A 81.169.176.18

if you want to use relative host names. Please have a look here:
http://langfeldt.net/DNS-HOWTO/BIND-9/

The wizards results:

Paste this into your zone file:

while ispcfg comes up only with this:

Quote:

Why don't you create three SPF records in ISPConfig, like the ones the wizards proposes?

Btw. does anyone here use a DNS provider he can recommend?

For my technical domain I'm using DirectI's ( http://www.directi.com/ ) DNS manager.

[Ovidiu]

thx for the tips,

I partly managed to fix it but it was tricky to do, if one does not really know what is to be filled in in the ispcfg... the field have different names than used in other tools / other how-to s

I figured out how to create this

zice.ro. IN TXT "v=spf1 a mx ~all"

this:

mail.zice.ro. IN TXT "v=spf1 a mx ~all"

I already had, but I have no clue how to create the last one:

h5810.serverkompetenz.net. IN TXT "v=spf1 a -all"

AND there seems to be some error somewhere (doesn't have to be ispcfg)... all of a sudden, that online-dns test did not work anymore, I had a look in the control panel and all looked normal, but when having a look into the pri.zice.ro file I saw there was a "." after MX 10 mail => MX 10 mail. which did not work. I manually deleted it and hopefully it will stay away

Still I have no clue as to what stealth ns are, I am going to read your link to the how to know, thx

[Ovidiu]

sorry, probs again after reinstalling server mith my NS records. could anyone post a working pri.xxxxx file here? including mx records and SPF records? you can take out IP addresses or hostnames,

thx

and on the other hand a dns report on zice.ro gives me this:

ERROR: One or more of your nameservers reports that it is an open DNS server. This usually means that anyone in the world can query it. This can cause an excessive load on your DNS server. Also, it is strongly discouraged to have a DNS server be both authoritative for your domain and be recursive (even if it is not open), due to the potential for cache poisoning (with no recursion, there is no cache, and it is impossible to poison it). Also, the bad guys could use your DNS server as part of an attack, by forging their IP address. Problem record(s) are:

Server 81.169.176.18 reports that it will do recursive lookups.

[falko]

Originally Posted by Tenaka

sorry, probs again after reinstalling server mith my NS records. could anyone post a working pri.xxxxx file here? including mx records and SPF records? you can take out IP addresses or hostnames,

thx

Here you go:

$TTL        86400
@       IN      SOA     ns5.example.com. hostmaster.example.com. (
                        2004122103       ; serial, todays date + todays serial #
                        28800              ; refresh, seconds
                        7200              ; retry, seconds
                        604800              ; expire, seconds
                        86400 )            ; minimum, seconds
;
                NS      ns5.example.com.              ; Inet Address of name server 1
                NS      ns6.example.com.              ; Inet Address of name server 2
;

  MX      10 mail.test.de.

test.de.      A        1.2.3.4
www       A       1.2.3.4
mail       A       1.2.3.4

test.de. IN TXT "v=spf1 a mx ~all"

;;;; MAKE MANUAL ENTRIES BELOW THIS LINE! ;;;;

[Ovidiu]

ok thx. but how would it look like with 2 nameservers? I tried to put hxxxx.serverkompetenz.net and mail.zice.ro as nameservers, does not work, I do not really know how to input this into ispconfig panel...

heres my pri.zice.ro

$TTL 86400
@ IN SOA h5810.serverkompetenz.net. admin.zice.ro. (
2006030506 ; serial, todays date + todays serial #
28800 ; refresh, seconds
7200 ; retry, seconds
604800 ; expire, seconds
86400 ) ; minimum, seconds
;
NS h5810.serverkompetenz.net. ; Inet Address of name server 1
NS h5810.serverkompetenz.net. ; Inet Address of name server 2
;

MX 10 h5810.serverkompetenz.net.

zice.ro. A 81.169.176.18
www A 81.169.176.18
mail A 81.169.176.18

mail.zice.ro. TXT "v=spf1 a mx ~all"

;;;; MAKE MANUAL ENTRIES BELOW THIS LINE! ;;;;

besides that do you have any clue why the test above said I have an open dns server? I did all according to the debian perfect setup...


and have a look at your example:

test.de. IN TXT "v=spf1 a mx ~all"

my record does not have the IN ? why would that be missing?

[falko]

Originally Posted by Tenaka

ok thx. but how would it look like with 2 nameservers? I tried to put hxxxx.serverkompetenz.net and mail.zice.ro as nameservers, does not work, I do not really know how to input this into ispconfig panel...

You must enter your two name servers under Management -> Server -> Settings -> DNS.

Originally Posted by Tenaka

besides that do you have any clue why the test above said I have an open dns server? I did all according to the debian perfect setup...

That's ok. It means that everyone can use your nameserver to resolve domain names, like you can use nameservers of different providers for your computers.

Originally Posted by Tenaka

and have a look at your example: my record does not have the IN ? why would that be missing?

Bind understands both formats (with and without IN).

[Ovidiu]

I am sorry I have confused you, what I meant was not 2 DNS servers but 2 MX servers. I tried entering values manually as well as using the cfp panel but I am not sure what is expected if I want to add mail.zice.ro as mailserver - what to enter into hostname and what into mailserver... its a bit confusing to me, sorry.

[till]

If you want to add MX records in ISPConfig DNS-Manager, leave the hostname field blank and anter the domain of your mailserver in the mailserver field.