[AusNOG] Crazy Domains mail admin

[Mark Andrews]

There is nothing wrong with this.

The fields in the TXT record are concatenated without whitespace in between the fields.

IPv6 address are case insensitive.  If your software crooks on uppercase hex digits, fix it.

See RFC 7208.

   ip6-network      = <as per Section 2.2 of [RFC4291]>
            ; e.g., 2001:db8::cd30

And if you look at RFC4291 all the examples are is UPPER case.

Mark

> On 7 Jul 2021, at 17:11, Mark Stewart <mark at nabc.com.au> wrote:
> 
> Afternoon!
>  
> Anyone here from Crazy Domains? Doing some SPF record adjustments on clients’ DNS and have discovered a few glaring issues with the SPF record for _spf.au.syrahost.com
>  
> The record below contains capitals for ipv6 values and I’m assuming the section ‘ ip4:43.2" "50.248.0/22 ‘ should be ip4:43.250.248.0/22
>  
> "v=spf1 ip4:122.201.124.0/23 ip4:176.74.24.0/21 ip4:185.184.152.0/22 ip4:103.226.220.0/22 ip4:103.250.212.0/22 ip4:103.254.136.0/22 ip4:163.47.72.0/22 ip4:203.170.80.0/21 ip4:27.54.80.0/20 ip4:27.123.24.0/21 ip4:27.124.112.0/20 ip4:43.243.116.0/22 ip4:43.2" "50.248.0/22 ip4:103.67.234.0/23 ip4:103.67.248.0/24 ip4:103.68.164.0/22 ip4:27.111.88.0/23 ip6:2a00:fd80::/32 ip6:2400:8240::/32 ip6:2404:8280::/32 ip6:2407:4C00::/32 ip6:2400:6D80::/32 ip6:2405:df80::/32"
>  
> Thanks!
> 
> Mark.
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka at isc.org