[mailop] Outbound IP ranges for iCloud

[Suresh Ramasubramanian via mailop]

Hi folks, we are deploying a new set of outbounds for iCloud alongside our 
existing ranges.Please update any filtering that you might have.Additionally, 
please note that mail from iCloud might ALSO originate from hosts with a 
*.apple.com PTR rather than a *.me.com or *.icloud.com PTR.  SPF / DKIM / DMARC 
will be valid for all our outbound mail traffic.iCloud Outbounds -IPv4 
:57.103.64.0/18 
17.139.247.417.42.251.7417.57.152.4017.57.154.3917.57.155.3417.57.156.38IPv6 
:2a01:b747:3000:200::/56 2a01:b747:3001:200::/56 2a01:b747:3002:200::/56 
2a01:b747:3003:200::/56 2a01:b747:3005:200::/56 2a01:b747:3006:200::/56 
2a01:b747:3004:200::/56  thanks—srs Apple iCloud Postmaster
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