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Apple overview

Apple, a U.S.-based mailbox provider (MBP), offers a free email service called iCloud Mail. iCloud Mail was announced in 2011, and replaced MobileMe accounts through conversion. This article provides an overview of iCloud's infrastructure, filtering technology, authentication, and mediation details.

Infrastructure 

Region

North America; U.S. 

Domains

mac.com, iCloud.com, me.com, mobile.me

Connection/throughput

Suggested MTA Settings:

  • 150 connections
    • 50 messages per connection 

Feedback loop (FBL) application

iCloud Mail does not offer a feedback loop. 

Postmaster site

Postmaster

 

Apple delivery mediation 

For public escalation of issues, send an email to [email protected] with the following information:

  • Company name
  • Email domain
  • The IP addresses of the affected mail servers
  • The SMTP errors from iCloud mail servers
  • A detailed description of the issue, including when it started

 

 

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