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VS: VS: CNAME / TXT

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In their (mailgun) instructions to the client.  And then the client wanted us to include those to his zone. 

CNAME of course is useful in general, but like I wrote, *here* it is not needed. 

Jukka

On 23.08.20 09:59, Jukka Pakkanen wrote:
>Yes, I think the whole CNAME is useless here anyway.

CNAME is useful, but it does not (and can not) work the way you want.

>These were the recommendations of this service provider, mailgun though..

where? the CNAME issue is long known and clarifies in RFC 2181, section 10.1. CNAME resource records ...published in 1997.


>Lähettäjä: bind-users <bind-users-bounces@lists.isc.org> Puolesta Ben 
>Croswell
>Lähetetty: 23. elokuuta 2020 2:24
>Vastaanottaja: ML BIND Users <bind-users@lists.isc.org>
>Aihe: Re: CNAME / TXT
>
>If you uncomment that mg CNAME you end up with a CNAME mx and TXT at the same node in to the DNS tree and that is illegal. That is why you get the error "cname and other data". The mx and txt are the other data.
>On Sat, Aug 22, 2020, 8:19 PM Jukka Pakkanen <jukka.pakkanen@qnet.fi<mailto:jukka.pakkanen@qnet.fi>> wrote:
>Cannot figure out what is wrong here… must be something simple but 
>after sitting in airplanes the last 40 hours and it’s 2am…
>
>Only when I comment out the two lines in the end of the named.harriot, it goes through and BIND load the zone. With those two lines, get the following:
>
>C:\DNS\etc\namedb>named-checkzone harriot.fi<http://harriot.fi> 
>named.harriot
>dns_master_load: named.harriot:33: mg.harriot.fi<http://mg.harriot.fi>: 
>CNAME and other data
>dns_rdata_fromtext: named.harriot:35: syntax error zone 
>harriot.fi/IN<http://harriot.fi/IN>: loading from master file 
>named.harriot failed: CNAME and other data zone harriot.fi/IN<http://harriot.fi/IN>: not loaded due to errors.
>
>;
>;    File:      named.harriot
>;
>
>$TTL 864
>
>@        IN SOA                              ns1.qnet.fi<http://ns1.qnet.fi>. helpdesk.qnet.fi<http://helpdesk.qnet.fi>. (
>         202008243      ; serial number
>             28800      ; refresh every 12 hours
>              7200      ; retry after 2 hours
>            604800      ; expire after 2 weeks
>              3600)     ; default ttl is 2 days
>
>harriot.fi<http://harriot.fi>.                                       IN A  35.214.111.143
>                                                          IN MX     10 qntsrv8.qnet.fi<http://qntsrv8.qnet.fi>.
>                                                          IN MX     10 qntsrv9.qnet.fi<http://qntsrv9.qnet.fi>.
>                                                         IN NS     ns1.qnet.fi<http://ns1.qnet.fi>.
>                                                         IN NS     ns2.qnet.fi<http://ns2.qnet.fi>.
>                                                         IN NS     ns3.qnet.fi<http://ns3.qnet.fi>.
>                                                          IN NS     ns1.z.fi<http://ns1.z.fi>.
>                                                          IN NS     ns2.z.fi<http://ns2.z.fi>.
>
>www                IN A 35.214.111.143
>api                     IN A 35.214.111.143
>webmail            IN CNAME mail.qnet.fi<http://mail.qnet.fi>.
>_autodiscover._tcp      IN SRV 0 5 443 mail.qnet.fi<http://mail.qnet.fi>.
>
>dev                                                                               IN A      35.214.111.143
>
>; mg                                                                              IN CNAME eu.mailgun.org<http://eu.mailgun.org>.
>mg                                                                                 IN MX                 10 mxa.eu.mailgun.org<http://mxa.eu.mailgun.org>.
>mg                                                                                 IN MX                 10 mxb.eu.mailgun.org<http://mxb.eu.mailgun.org>.
>mg                                                                                 IN TXT                v=spf1 include:eu.mailgun.org<http://eu.mailgun.org> ~all
>
>; smtp_domainkey.mg<http://smtp_domainkey.mg>             IN TXT "k=rsa; p=MII-----AQAB"
>
>
>
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