Hello Renzo,
App Engine Custom Domain settings are being managed through the developers console for a while now and shouldn't introduce an issue now. How are you sending
python.pro.br to appspot? Can there be a DNS issue that you need to check with your registrar (seems to be DreamHost)? Here is what I get from a simple DNS query now:
$ dig
python.pro.br; <<>> DiG 9.9.5-9+deb8u6-Debian <<>>
python.pro.br;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34469
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;
python.pro.br. IN A
;; ANSWER SECTION:
python.pro.br. 10124 IN A 208.113.249.40
;; Query time: 4 msec
;; SERVER: 169.254.169.254#53(169.254.169.254)
;; WHEN: Tue Jun 07 12:26:54 EDT 2016
;; MSG SIZE rcvd: 58
and then
I recommend going through the documentation about
Using Custom Domain and SSL and making sure everything is setup correctly for your application currently.
I hope that helps. Cheers!