OmniMessaging Functional Description 8.3

OmniMessaging Functional Description
07/22/04 Opsol Integrators Inc. Confidential and Proprietary Page 26 of 68
If the delete operation fails, the MBM retries the failed operation as specified in
the Max retry count entry. If retries are exhausted, the record is written to the
MBM backup queue.
The MBM will reschedule a message delete until all sessions that have the
mailbox selected are aware that the message has been expunged. The MBM
will reschedule a mailbox delete until there are no sessions that have the
mailbox selected.
The MBM process also cleans up orphaned sessions that result from
unexpected OmniMessaging process terminations.
10.1.5 Message Aging Server (MAS)
The MAS deletes messages older than a period specified for each mailbox. A
system wide default maximum age can also be specified.
Each MAS process is a static NonStop™ TS/MP process that runs as a
background task. Each MAS server class accepts key range parameters so
that a number of them can run in parallel across particular physical partitions.
10.1.6 Post Office Protocol version 3 (POP3)
OmniMessaging provides host-based mailboxes for OmniMessaging users.
OmniMessaging supports the standard POP3 protocol to allow users to access
their mailboxes remotely from desktop mail clients. Users can establish
connections to their mailboxes, count the messages in their inboxes, retrieve
messages to local storage, and delete messages from host-based mailboxes.
OmniMessaging POP3 includes POP3 server and distributor processes.
You configure the POP3 server and distributor as NonStop™ TS/MP processes
running under control of a PATHMON process.
POP3 is an Internet Protocol (IP) for remote mailbox access; its specifications
are documented in RFC 1939 (for more information, see RFC 1939—Post
Office Protocol—Version 3).
Initially, the server host starts the POP3 service by monitoring TCP port 110.
When a client host establishes a TCP connection with the server host, the
POP3 server sends a greeting. The client and POP3 server then exchange
commands and responses until the connection is closed or aborted.
10.1.7 Internet Message Access Protocol version 4 revision 1 (IMAP4)
OmniMessaging provides host-based mailboxes for OmniMessaging users.
OmniMessaging supports the standard IMAP4 protocol to allow users to access
their mailboxes remotely from desktop mail clients. IMAP4 varies from POP3 in
providing management functions for the mail to remain centrally stored in
OmniMessaging.
OmniMessaging IMAP4 includes IMAP4 server and distributor processes.
You configure the IMAP4 server and distributor as NonStop™ TS/MP
processes running under control of a PATHMON process.