A crippling problem with this system was resolved when some genius hit upon the idea of using naive Bayes classifiers to circumvent it.
The somewhat difficult task of matching a bounce to its source in this system can be made very easy by using VERP. Validation in this system is popularly implemented using a combination of SPF and DKIM. A special type of DNS record called an MX record is used for this system to determine routing. A protocol used for this system achieves real-time updates by using the IDLE extension. All of its implementations use the (*) SMTP protocol for sending data. A crippling problem with this system was resolved when some genius hit upon the idea of using naive Bayes classifiers to circumvent it. Delivery status notifications are the most common implementation of return receipts for this system, and its MIME extension allowed for the inclusion of attachments. For 10 points, name this system crippled in its early days by spam.
The somewhat difficult task of matching a bounce to its source in this system can be made very easy by using VERP.
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