OmniMessaging Functional Description 8.3

OmniMessaging Functional Description
07/22/04 Opsol Integrators Inc. Confidential and Proprietary Page 44 of 68
11.5.10 Optional IMAP Login Failure
Within OmniMessaging it is possible to configure how a failed login is handled.
This is to allow for differences between different client types.
There are two options:-
• Drop the session if the user fails authentication
• Retain the session if the user fails authentication
This is controlled by the system parameter
AUTH_FAILED_KEEP_CONNECTION.
11.5.11 Use of local HOST or DNS lookup for IP resolution
OmniMessaging uses a two step sequence to resolve an IP address from a
given domain name. Firstly the MTA checks the local HOST file to see if it can
resolve the domain name locally. If it cannot be resolved locally, the MTA then
invokes the DNS lookup service. The DNS lookup service is usually provided
by an ISP and therefore resides on an external platform. In this scenario it can
be beneficial to define frequently used domains locally on the HOST file to
avoid a potential delay in doing an external lookup.
Warning: Adding entries to the local HOST file can result in performance
improvements of lookup operations. However, in undertaking this operation,
the customer must be aware of their responsibility to maintain the HOST file in
the event of domain name/IP address changes.