Meysam𝗦𝗣𝗙 𝗵𝗮𝘀 𝗮 𝟭𝟬-𝗹𝗼𝗼𝗸𝘂𝗽 𝗹𝗶𝗺𝗶𝘁. 𝗠𝗼𝘀𝘁 𝗽𝗲𝗼𝗽𝗹𝗲 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝘁𝗵𝗲 𝗵𝗮𝗿𝗱 𝘄𝗮𝘆.
above 10 DNS the entire SPF check returns permerror
I see this constantly
A company adds a new ESP
their IT team appends another `include:`
and suddenly legitimate email bounces
The fix isn't removing services
It's flattening
resolving nested includes into direct IP ranges
