[Pdns-users] BIND-Zonefiles: @ vs blank

[Bjoern Franke]

Hi,

we have a zonefile which got recently added TXT entries for SPF and DMARC:

_dmarc		IN	TXT	"v=DMARC1; p=none; rua=mailto:foo"
                IN      MX      10 mx.domain.tld.
		IN	TXT	"v=spf1 include:spf1.domain.tld ?all"

Since then, requests for the MX record were not answered any more,
adding a @ fixed it.

I'm wondering now why this happens, as in other zonefiles without TXT
records the blank substitution works.

Kind regards
Bjoern