MURRAY STEPHEN KUCHERAWY
Pilots at Upland Dr, San Francisco, CA

6658454, Dec 2, 2003

Feb 7, 2000

09/499502

Mark Delany - El Cerrito CA
Murray Kucherawy - San Francisco CA

Sendmail, Inc. - Emeryville CA

G06F 1516

709202, 709206

An electronic mail (“e-mail”) system providing improved methodology for processing messages sent to mailing lists is described. The system include an “Injector” component which serves to “inject” messages into one or more Message Transfer Agents (MTAs). The systems Mailing List Manager (MLM), acting through the Injector, posts the address to a first MTA. If that MTA successfully processes the address, it responds with a “success” result, which may be passed back through the Injector to the MLM. If, on the other hand, that MTA is not successful, then the address is passed off to a second MTA. Again, if that MTA is successful, it will indicate that success back to the MLM; otherwise, the address is then passed off to the next MTA. The foregoing sequence continues until either the address for the given recipient is successfully processed by one of the MTAs or all of the available MTAs have been exhausted. In the event that all of the available MTAs fail, the address is then ultimately passed on to a fallback MTA, which will indicate initial success and assume any responsibility for queuing the message for that recipient.

7146402, Dec 5, 2006

Aug 31, 2001

09/945130

Murray Kucherawy - San Francisco CA, US

Sendmail, Inc. - Emeryville CA

G06F 15/16, G06F 17/00

709206, 709227, 726 1

An e-mail system is described that includes a flow control filter, which is particularly suited for filtering on a per-domain (host) basis. During processing of incoming e-mail, each child MTA process created to handle a particular new connection connects to a flow control filter service, so that it can interact with the service during arrival of a message. This interaction provides a complete description of the incoming client, including IP address and host name, as well as the complete SMTP interaction. Since the flow control filter service monitors all children processes, it attains a global view of traffic flowing through the system. By virtue of its global view, the flow control filter service can track information on a per domain basis, including total volume of e-mail received from a particular domain over a given period of time. Since the knowledge lost by the forking process is captured by the flow control filter service, the service is in a position to enforce policy-based rules, including placing restrictions on child processes, based on the per-domain tallies encountered.

7058687, Jun 6, 2006

May 22, 2001

09/863941

Murray Kucherawy - San Francisco CA, US

Sendmail, Inc. - Emeryville CA

G06F 15/16, G06F 9/46

709206, 718107

An e-mail system is described that includes a mass-mail accelerator (MMA), which is particularly suited for processing mass e-mailings. Instead of being posted to a message transfer agent (MTA), outgoing messages are instead passed to the MMA for carrying out highly parallel e-mail delivery/routing. The MMA employs a plurality of queues, which may either be general or specific. A specific queue is configured to handle only e-mail destined for a particular domain, such as the AOL. com domain; a general queue is configured to handle all other e-mail. Each queue manages a pool of MTA threads. During MMA operation, once a message has been passed to a queue, that queue examines its MTA threads to see if one is ready to accept the message. If an MTA thread is ready, the queue will assign the message to that MTA. The MTA thread proceeds to handle the work of the SMTP exchange between the MMA and the target real-world MTA (e. g.

8095677, Jan 10, 2012

May 21, 2009

12/470436

Murray S. Kucherawy - San Francisco CA, US

Sendmail, Inc. - Emeryville CA

G06F 15/16, G06F 15/173, G06F 15/177

709230, 370256, 370254, 370253, 370351

Techniques for compressing a set of input addresses to generate a set of one or more rules for various network applications and tools such as routers, firewalls, and others. A tree is generated based upon a set of input addresses. A set of one or more rules may be generated based upon the generated tree and a tolerance value. The set of one or more rules may identify one or more address segments that include the input addresses and may also include one or more additional addresses. In one embodiment, the set of one or more rules may be one or more Classless Internet Domain Routing (CIDR) expressions. The set of one or more rules may be provided to various network applications and tools for further processing.