OmniMessaging Functional Description 8.3

OmniMessaging Functional Description
07/22/04 Opsol Integrators Inc. Confidential and Proprietary Page 11 of 68
5 OmniMessaging MMS, Email
Opsol’s OmniMessaging provides an industrial-strength messaging solution
suitable for electronic commerce and e-mail service providers, which demand
scalability, reliability, and high-performance message backbones.
OmniMessaging exploits the unique ability of HP NonStop™ systems to provide
the most reliable email server in the world. OmniMessaging is reliable
(99.999%), scalable and secure.
This document is a functional description of the OmniMessaging solution.
OmniMessaging provides the following general functions:
• SMTP messaging over a TCP/IP network
• POP3, IMAP4 Protocol support
• SMPP3.4 support for SMS, OTA for cellular services
• Store-and-forward for Internet or local intranet messaging services
5.1.1 Guaranteed Email server
OmniMessaging is the world most reliable email messaging server. It provides
reliability in the following ways:
• Built on a NonStop™ fault-tolerant platform thus providing high system
availability.
• Uses NonStop™ Transaction Manager/MP (TM/MP) to safeguard data
integrity.
• Uses NonStop™ Transaction Services/MP (TS/MP) to provide process
persistence.
• Provides automatic retries of delivery when recoverable failures occur.
After the maximum number of retries are attempted, OmniMessaging
generates NDR’s (Non-Delivery Reports).
Once OmniMessaging accepts responsibility for a message, it ensures that the
message is not lost. OmniMessaging safe stores all incoming messages on disk
and then acknowledges the message. Once OmniMessaging accepts
responsibility for the message it is never lost. OmniMessaging will deliver the
message to its local users or forward the message to a remote MTA for remote
users. If the remote MTA is unavailable, OmniMessaging will continue to retry
delivery for a configurable period. In the event that the message still not cannot
be delivered then OmniMessaging will return a Non Delivery Report to the