how long is the ttl of ipv6.mailcow.email

ThiSchwa

I’ve accidently missconfigured the ipv6 address of my host some days ago. ‘nslookup’ reports the correct ipv6 address (tested on different servers), but not ipv6.mailcow.email.
Is there anybody who knows the ttl of this service?

esackbauer

I don’t have IPv6 enabled, but you can check yourself:
dig +nocmd +noall +answer +ttlid a ipv6.mailcow.email

For the ipv4 host it shows 120 seconds:
root@app02:~$ dig +nocmd +noall +answer +ttlid a ipv4.mailcow.email ipv4.mailcow.email. 120 IN A 49.12.4.251

https://toolbox.googleapps.com/apps/dig/#AAAA/
With “web dig” it shows a TTL of 1 hour.

ThiSchwa

@esackbauer
For ipv6 it shows 511 seconds:
dig +nocmd +noall +answer +ttlid aaaa ipv6.mailcow.email ipv6.mailcow.email. 511 IN AAAA 2a01:4f8:c17:7906::10
ttl is less enough, but wrong ipv6 is still reported.
BTW: hostname is configured correctly.

ETNyx

Better to not strip answer, in your case 511 is time to next prune of cache of your responding DNS and it can be many things,… you do not see this bc you reduce verbosity of an answer

In case you want TTL set-up to this domain you need to ask to designated NS so dig AAAA @dexter.ns.servercow.net ipv6.mailcow.email -> 3600 sec