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The ARF format is designed to be extensible, providing for generic spam reporting, e.g. from users to some anti-spam center or help desk, or for opt-out operations. The format defines a new MIME type to be included in a multipart/report attachment, and includes at least the headers of the offending message.
The report is characterized by a Feedback-Type field whose values may indicate one of abuse, fraud, virus, or other (more types are registered at IANA). Microsoft, who use the name Junk Mail Reporting (JMR), also use their own format. [10] Google's Gmail is beta testing a non-traditional FBL with select ESPs. [11]
An email inbox containing a large amount of spam messages. Spamming is the use of messaging systems to send multiple unsolicited messages (spam) to large numbers of recipients for the purpose of commercial advertising, non-commercial proselytizing, or any prohibited purpose (especially phishing), or simply repeatedly sending the same message to the same user.
Abuse reports are a particular kind of feedback whereby users can flag other users' posts as abusive content. Most web sites that allow user-generated content either apply some sort of moderation based on abuse reports, such as hiding or deleting the offending content at a defined threshold, or implement a variety of user roles that allow users to govern the site's contents cooperatively.
C/R systems should ideally: Allow users to view and act on messages in the holding queue. Comply with the requirements and recommendations of RFC 3834. [1]Obey a detailed list of principles maintained by Brad Templeton, [2] including allowing for the creation of “tagged” addresses or allow pass-codes placed in either the Subject: header or the body of the message—any of which lets ...
Various anti-spam techniques are used to prevent email spam (unsolicited bulk email).. No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) as opposed to not rejecting all spam email (false negatives) – and the associated costs in time, effort, and cost of wrongfully obstructing good mail.
In order to prevent being blacklisted, major free email services such as Gmail, Yahoo, and Hotmail, as well as major ISPs now implement outgoing anti-spam countermeasures. Gmail, for example, continues to get listed and delisted [9] [10] because they refuse abuse reports. [11] However, smaller networks may still be unwittingly blocked.
Greylisting is a method of defending e-mail users against spam. A mail transfer agent (MTA) using greylisting will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate, the originating server will try again after a delay, and if sufficient time has elapsed, the email will be accepted.