EP 1922630 A4 20090923 - SYSTEM AND METHOD FOR DETECTING AND FILTERING UNSOLICITED AND UNDESIRED ELECTRONIC MESSAGES
Title (en)
SYSTEM AND METHOD FOR DETECTING AND FILTERING UNSOLICITED AND UNDESIRED ELECTRONIC MESSAGES
Title (de)
SYSTEM UND VERFAHREN ZUM DETEKTIEREN UND FILTERN VON UNERBETENEN UND UNERWÜNSCHTEN ELEKTRONISCHEN NACHRICHTEN
Title (fr)
SYSTÈME ET MÉTHODE DE DÉTECTION ET DE FILTRAGE DE MESSAGES ÉLECTRONIQUES NON SOLLICITÉS ET NON DÉSIRÉS
Publication
Application
Priority
US 2005028510 W 20050810
Abstract (en)
[origin: WO2007021261A1] A sending device locates and stores identifying information for each electronic message sent by the device. A receiving device, upon receipt of an electronic message, locates identifying information for the electronic message and the purported sending device of the message. The receiving device communicates a confirmation request to the purported sending device which contains identifying information for the message. The sending device receives confirmation messages and replies to such messages confirming that the message was sent if identifying information in the confirmation request corresponds to identifying information stored by the sending device and denying that the message was sent if the identifying information in the confirmation request does not correspond to stored data.
IPC 8 full level
G06F 15/16 (2006.01)
CPC (source: EP)
H04L 51/212 (2022.05); H04L 63/126 (2013.01); H04L 63/14 (2013.01)
Citation (search report)
- [X] US 2003220978 A1 20031127 - RHODES MICHAEL J [US]
- See references of WO 2007021261A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007021261 A1 20070222; EP 1922630 A1 20080521; EP 1922630 A4 20090923; JP 2009505216 A 20090205
DOCDB simple family (application)
US 2005028510 W 20050810; EP 05784143 A 20050810; JP 2008525971 A 20050810