Re: Allowing mail from multiple domains

From: Todd Lyons <>
Date: Tue, 22 Apr 2014 13:38:22 -0700

On Tue, Apr 22, 2014 at 12:49 PM, Phil Stracchino <> wrote:
>> As I understand things, _ is not valid in a hostname, but it is valid
>> in a DNS RR.
> Yes, and it's legal in an IN TXT record. However, due to quirks of
> bind9 implicit syntax, it was causing the next A record to fail.

That's interesting, I've not seen this. Some of my bind servers use
generated zone files and some are backed by dlz with mysql, so my
systems are not homogenous enough to be indicative.

> I moved the _domainkey TXT record to the end of each respective zone
> file, and it's now working.

That's a really odd bug. I haven't come across that in my versions of
bind9. Which versions are affected?

The total budget at all receivers for solving senders' problems is $0.
 If you want them to accept your mail and manage it the way you want,
send it the way the spec says to. --John Levine
Received on Tue Apr 22 2014 - 20:38:41 PST

This archive was generated by hypermail 2.3.0 : Tue Apr 22 2014 - 20:45:01 PST