它具有具有下列DNS记录的公共IP地址:记录- IN A <IPv4 of the VM> MX记录- IN MX 10 proxy.internal.domain.ltd.TXT记录-“`IN "v=spf1 a mx ip4:~all”DMARC记录“
_dmarc.proxy.internal.domain.ltd IN TXT v=DMARC1; p=none; rua=mailto:dmarc@proxy.internal.domain.ltd; pct=100; adkim=r; aspf=r; fo=0&