I just noticed that I hadn't been getting any mail for the pwg lists for
a while. The reason is likely also to block mail to other subscribers.
The issue is that www.pwg.org started sending mail over ipv6, but its v6
address does not have a PTR in ip6.arpa.
The linode management interface should permit whoever admins that node
to specify the PTR. Else, linode should accept a ticket to do so.
Once that is done, if that PTR specified www.pwg.org, it would be a good
idea to add and AAAA record, too.
Alternatively, modify the postfix config on that box and set:
smtp_address_preference = ipv4
to tell it not to send mail via ipv6.
One of the member corps (with an hellenic naming scheme) also has this
problem with their main outgoing smtp box. I don't know where best to
report that, so that it would get addressed. Any suggestions?)
James Cloos <cloos at jhcloos.com> OpenPGP: 1024D/ED7DAEA6