Doug:
> When trying to sign up for the list from my regular e-mail address
> (served by my Postfix mail server, on a vhost at Arp Networks) I
> got the following:
>
> <majord...@postfix.org>: host mail.cloud9.net[2604:8d00:0:1::4]
> said: 554 5.7.1
> <dougbarton.us>: Helo command rejected: Access denied (in reply
> to RCPT TO command)
>
> That's very odd, as for several years I've never had mail rejected
> before. I have rDNS for my IPv4 and IPv6 addresses, SPF, DKIM,
> DMARC, etc. (All working) I can send to big providers like Google
> and Yahoo! with no issues as well.
>
> Can anyone point me in the right direction as to why cloud9.net
> is shutting me down? If there is a problem I'm happy to fix it.
> :)
Maybe the old-fashioned way - ask postmaster@
Wietse
