The following links detail MSNŽ Services' requirements for sending
email to hotmail accounts.
"This site has been developed to give bulk e-mailers/senders, ISPs,
e-mail service providers (ESPs), postmasters, and domain
administrators a location to learn more about issues and solutions
related to sending communications to MSN Hotmail consumers."
MSN Postmaster: Senders
"These filters can pose a challenge to high volume e-mailers. There
are a few things that e-mailers can do to improve the effectiveness
and delivery of e-mail sent to Hotmail accounts. Below are usage
guidelines which provide tips and techniques to improve delivery of
e-mail to Hotmail, and reduce the risk of messages being delivered to
the Junk E-Mail folder in Hotmail ("false positives"). Additionally,
Hotmail has adopted the Bonded Sender program. Being a Bonded Sender
participant helps improve delivery of e-mail through the Hotmail
filters. The sections below provide more details on our junk e-mail
efforts and solutions available for e-mailers."
MSN Postmaster: Troubleshooting
The following information is for Postmasters, Domain Administrators,
or other technical representatives looking to address issues
* Delivery problems when sending legitimate e-mail to Hotmail accounts.
1. Technical standards for e-mail.
2. Problems with e-mail delivered into Hotmail junk e-mail folders
(includes instructions for reporting problems to Hotmail).
* Recent Changes [remove "HTML forms from e-mail and instead provide a
link to a web page"].
* Technical Standards for E-Mail
All e-mail sent to the MSNŽ Services should comply with the following
acceptable use guidelines:...
* Junk E-Mail Filter "False Positives"
"'False positives' refers to e-mail that has legitimate content and
which adheres to the technical standards, but is incorrectly flagged
as junk e-mail by the junk e-mail filters. Such e-mail is delivered to
the recipient's Junk E-Mail folder.
Hotmail's solution for addressing this issue is the Bonded Sender program."
* Documentation for Bulk or Duplicative E-Mail for Contacting MSN Hotmail
Microsoft Anti-Spam Policy
The Internet Society
Anti-Spam Recommendations for SMTP MTAs
The Internet Society
SMTP Service Extension for Command Pipelining
Federal Trade Commission (FTC)
"Remove Me" Responses and Responsibilities:
Email Marketers Must Honor "Unsubscribe" Claims
Application Note: Guidelines for proper mailing list management
Bonded Sender Program
Additional Links of Interest:
How Hotmail Filters Junk Mail
Microsoft Shares Hotmail's Antispam Data
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