DNSSTUFF is complaining about not being able to send mail to abuse and postmaster with the following error:
Mailserver rejected mail to abuse. Mailservers are required by RFC2142 Section 2 to have a valid abuse address that is accepting mail.
www.xxx.yyy.zzz | unexpected response to [RCPT TO: ] | 450 4.1.8 : Sender address rejected: Malformed DNS server reply
I've verified that I can send email to the appropriate addresses correctly, and looking at my logs I haven't seen it from any other domain. The target MTA is running Postfix 2.8.5.
Is this something to worry about? A misconfiguration in DNSSTUFF? Or something else.
Thanks!