Facilitating transmission of email by checking email...

Details Facilitating transmission of email by checking email... Facilitating transmission of email by checking email...

2011-08-09

2011-08-09

Chan, Wing (Department: 2441)

Electrical computers and digital processing systems: multicomput

Computer conferencing

Demand based messaging

Reexamination Certificate

active

07996475

ABSTRACT:
Facilitating email transmission by extracting email parameters, requesting data in the form of a dns query, and receiving a sender reputation as an IP address. Querying a database by sending a plurality of arguments concatenated to a dns request and receiving an IP address in reply. Operating a remote database as a dns server, receiving queries as domains and transmitting replies in the format of IPv4 or IPv6 addresses. Filtering email by querying a database with email parameters comprising an IP address and a domain of an email sender which may be extracted from an email header in the HELO, EHLO, MAIL FROM, or RETURN PATH. The smtp session is continued, modified or interrupted according to the result of the query submitted to a database operating as a dns server.

REFERENCES:
patent: 5956681 (1999-09-01), Yamakita
patent: 7539761 (2009-05-01), Brown et al.
patent: 2005/0198159 (2005-09-01), Kirsch
patent: 2008/0184366 (2008-07-01), Alperovitch et al.
patent: 2008/0208995 (2008-08-01), Takahashi et al.

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