On Tue 17/Jun/2025 14:20:52 +0200 sebastian wrote:
>>Presumably, a mail server should not consult a DNS hacked for browsers?
Presumably, a firewall located between LAN and WAN has no way to know if the
UDP packet is for a SPF client or browser. It sees a DNS response packet coming
from a server on the WAN side that is not in the firewall's list of servers
permitted to bypass DNS Rebinding orotection, finds a private IP in the
response, and throws the UDP packet in the dustbin.
You can run a DNS server for use by the mail server only.
Best
Ale
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