Email Authentication
gdconf.com
SPF
passDeclares which servers may send mail for this domain.
v=spf1 include:_spf1.swapcard.com include:spf.protection.outlook.com include:_netblocks.mimecast.com ~all
DKIM
noneCryptographic signature on outbound mail (selector: none).
No record published.
DMARC
noneTells receivers what to do with mail that fails SPF/DKIM.
No record published.
Mail Servers (MX)
10 us-smtp-inbound-1.mimecast.com
20 us-smtp-inbound-2.mimecast.com