Mike Cardwell schrieb:
> On Thu, 30 Sep 2010 08:49:33 +0200, Thomas Hochstein <exim-dev@???>
> wrote:
>> Wasn't it disallowed to use underscores in DNS entries?
>
> Nope, underscores are fine. Not in domain names, but in DNS records.
> Otherwise how would DKIM work? (_domainkey.example.com)