Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Cell Phones

Method-and-apparatus-for-adding-data-attributes-to-e-mail-messages-to-enhance-the-analysis-of-delivery-failures

Hysteresis-free anti-saturation circuit

It is accordingly an object of the present invention to avoid saturation over a wide range of ...

GPS receiver utilizing a communication link

OF THE INVENTION This invention concerns apparatuses and methods for computing the position of a ...

Antenna switching technique for improved data throughput in communication networks

What is claimed is: 1. An apparatus for improved data throughput in a communication network; said ...

Method and apparatus for eliminating ionospheric delay error in global positioning system signals

The present invention utilizes a semi-codeless technique to obtain ionospheric delay measurements ...

Wireless communication system for adapting to frequency drift

OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates a wireless communication system of the present ...

Reduction of time to first fix in an SATPS receiver

The invention focuses on initial acquisition (at the time of power-up), reacquisition (after loss ...

Method and circuit for achieving frequency conversion

The present invention was made so as to solve the above problems and has as an object thereof to ...

Method and apparatus for determining time for GPS receivers

The present invention discloses a method and apparatus for acquiring timing signals for use in a G...

Method and apparatus for tracking a communication signal in a wireless communication system

OF THE PREFERRED EMBODIMENT An improvement for tracking a mobile communication signal which ...

Method and arrangement for antenna selection control in a radio receiver

Starting from this prior art, it is the object of the invention to specify a method and an ...

Method and apparatus for adding data attributes to e-mail messages to enhance the analysis of delivery failures

Details

Inventors: Kubik, Joseph; Ullmann, Lorin Evan;
Assignee: International Business Machines Corporation (Armonk, NY)
Primary Examiner: Vu; Viet D.
Assistant Examiner:
Attorney, Agent or Firm: Yee; Duke W., Mims, Jr.; David A., Glanzman; Gerald H.

A dead e-mail identification locator discovers dead e-mail addresses without forwarding messages to valid recipients. Existing headers in the mail protocol are extended to include a test header. A mail server that supports the protocol extension of the present invention may send a reply if the address does not exist and may discard the message if the address does exist. The test header allows a sender to test an e-mail address for validity without the message being forwarded to the user, as will be described below. The sender may be a dead e-mail locator program, which tests a plurality of e-mail addresses. The sender and recipient mail servers may include attributes in the test header to enhance the analysis of delivery failures. Using these attributes, the dead e-mail address locator can pinpoint the location of e-mail message delivery failure and profile the performance of routing of messages and other details hidden from users.

DETAILED DESCRIPTION The present invention enables servers to send dummy e-mail messages to one another in order to receive status of e-mail identifications.
The protocol layer is extended to include a user field to indicate that the message is not to be forwarded to the owner of the e-mail identification.
A mail server that is not modified to support the field remains unaffected, while a mail server that supports the protocol extension sends a reply if the identification does not exist and discards the message if the identification does exist.
The present invention adds generic attributes that are exchanged via e-mail messages and are not viewed by the senders or receivers of the messages.

Related patents

	Power resource management system The present invention disclosed and claimed herein compromises a power management system for managing power distribution between an operating system and a recharging ...
	Dual conversion transmitter It is therefore an object of the present invention to provide an inexpensive transmitter. It is another object of the present invention to provide a transmitter ...
	GPS synchronized frequency/time source Generally speaking, the GPS-based frequency/time source of the present invention provides an accurate, traceable low-cost frequency/time reference. In particular, the ...
	Single-chip GPS receiver digital signal processing and microcomputer OF THE PREFERRED EMBODIMENT FIG. 1 illustrates a GPS digital integrated circuit (IC) embodiment of the present invention, referred to herein by the general reference ...
	Sync acquisition and tracking circuit for DS/CDMA receiver It is therefore an object of the present invention to provide a precision sync acquisition and tracking circuit for a direct sequence spread spectrum receiver. According ...
	Channel-independent equalizer device OF THE DISCLOSURE The present invention is primarily intended for use in cellular communication systems, although it will be understood by those skilled in the art that ...
	Method and apparatus for increasing receiver immunity to interference The process of the present invention adjusts the gain of a receive circuit, thereby improving a receiver's immunity to interference. The circuit has an LNA which ...
	Voice activity detector What is claimed is: 1. A voice activity detector for detecting the presence of speech in an input signal which comprises a noise component, said detector comprising: (a) ...
	GPS receivers and garments containing GPS receivers and methods for using these GPS receivers The present invention provides a GPS receiver having multiple GPS antennas which are coupled to one digital memory or several digital memories in order to store ...
	Method and apparatus for determining the location of an object which may have an obstructed view of the sky This invention concerns apparatus and methods for computing the location of a submerged or other remote object which may have an obstructed view of the sky using a ...

0.034
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved