Professional Test: Your MX does not appear to have working RDNS

[jeremyhu]

I'm going through the IPv6 cert tests now, and I'm stuck on the IPv6 RDNS for my mail server.  Everything seems to be setup ok at my end.  I'm assuming they're using the mail server that was used from the previous test to deliver mail to me since this test does not have a field to provide a mail server for testing.

Does anyone have any idea why this is bugging out?

~ $ dig outersquare.org MX | egrep -v '^(;|$)'
outersquare.org.   3623   IN   MX   10 mail.outersquare.org.

~ $ dig mail.outersquare.org AAAA | egrep -v '^(;|$)'
mail.outersquare.org.   469   IN   AAAA   2001:470:1f05:140b::6

~ $ dig -x 2001:470:1f05:140b::6  | egrep -v '^(;|$)'
6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.b.0.4.1.5.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. 6633 IN PTR mail.outersquare.org.

~ $ host mail.outersquare.org
mail.outersquare.org has address 75.144.255.89
mail.outersquare.org has IPv6 address 2001:470:1f05:140b::6

~ $ host 2001:470:1f05:140b::6
6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.b.0.4.1.5.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa domain name pointer mail.outersquare.org.

[cholzhauer]

Everything looks good to me too

There are times where someone at HE needs to kick the server flush the cache.

What are your TTL settings?

[jeremyhu]

TTL is 7200 ... it seems they've "kicked" themselves ;) ... it's working now