I had to add a second account here, with another e-mail provider, since my registration from @inbox.com wasn't successful.
Also, if I try sending e-mail from my HelioHost account (say from cPanel/webmail, with a parked domain like yyy.co.cc) to an account on inbox.com I always receive a bounce of my message, with the errors:
"lxxx@inbox.com
SMTP error from remote mail server after MAIL FROM:<xxx@yyy.co.cc> SIZE=1836:
host inc.inbox.com [64.135.83.90]: 551 Server access WH97.inbox.com forbidden by invalid RDNS record of your mail server (65.19.143.2)."
From the above I deducted that all the messages requesting validation from this forum, to my "lxxx@inbox.com", have a bounce back... Is it so?
Are you aware of this kind of problem?
~ Luca