[BlueOnyx:14835] BUG: BX does not allow underscores to be entered into DNS records

[Dogsbody]

Michael,

I know this has been discussed before (back in 2010) so please don't 
think I'm nagging :-)

BX does not allow underscores to be entered into DNS records.  This is 
essential for DKIM and DMARC records.

I can carry on putting them in the .include files but I've just hit this 
bug again so I thought I'd bring it up again.  *smiles nicely*

Thank you

Dan