Method and system for e-mail message transmission
US7127741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2001 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Aug 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An e-mail firewall applies policies to e-mail messages transmitted between a first site and a plurality of second sites. The e-mail firewall includes a plurality of mail transfer relay modules for transferring e-mail messages between the first site and one of the second sites. Policy managers are used to enforce and administer selectable policies. The policies are used to determine security procedures for the transmission and reception of e-mail messages. The e-mail firewall employs signature verification processes to verify signatures in received encrypted e-mail messages. The e-mail firewall is further adapted to employ external servers for verifying signatures. External servers are also used to retrieve data that is employed to encrypt and decrypt e-mail messages received and transmitted by the e-mail firewall, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.