System requirements

This topic describes the server requirements for IBM® mail support for Microsoft™ Outlook (IMSMO).

System requirements

As of Domino 10, the server components required for IMSMO are installed with the Domino server. Installing the IBM mail server add-on (IMSA) is no longer necessary.

For detailed system requirements, see the Domino and Traveler system requirements.

For information on installing and configuring Traveler, see Administering IBM Traveler.

Server configuration settings

$CSUID2APPTUNIDCONTROL=4 - This INI setting impacts the home mail server, i.e., the server where mail gets delivered, even if that is not the Traveler server.
- Recommended - The setting is recommended if all servers in the same cluster of the home server are running Domino® release 9.0.1 or higher. If all servers are not running Domino® release 9.0.1 or higher, there is a remote potential to have rescheduled calendar entries from external, non-Notes® meeting organizers appear as invitations. This happens if the original invitation arrives on a 9.0.1 server, and the reschedule notice is delivered to a server earlier than Domino® 9.0.1, for example due to failover.
- Required - This INI setting is required on your home server, to ensure successful interoperability with external organizers, especially in cases where there are both AIX® and non-AIX® servers involved - for example, when an AIX® server is the home server, and there is a Windows™ server that services IBM® Mail support for Microsoft™ Outlook. In such a scenario, counter proposals to external organizers will not work from Outlook.
HTTP will be enabled on first launch after Traveler server installation, if it was not already enabled
- If you configure high availability mode, configuring client-side SSL termination at the sprayer is recommended. In this case, there is no need to enable SSL for HTTP.
- If you do not configure high availability mode, SSL must be enabled for HTTP; to validate that SSL is enabled, test that you can connect via web browser and HTTPS to your mail file (iNotes®), and log in successfully. Alternately, you could access the server at HTTPS://[host] to see the home page for the server, or a login page if the server does not allow anonymous access.
  For additional information, see the Domino® wiki topics:
  - Generating a keyring file with a self-signed SHA-2 cert using OpenSSL and kyrtool
  - Generating a keyring file with a third party CA SHA-2 cert using OpenSSL and KYRTool on a Windows workstation
For larger deployments IBM® recommends increasing both the Cached user expiration interval and Maximum cached users values, which can be found in the server document (Internet Protocols > Domino Web Engine). Set Cached user expiration interval to 28800 seconds (8 hours); for Maximum cached users, please set to the number of users that are expected to be using this Traveler server.

Server settings - user access

Note: IMSMO users must be in the same domain as the Traveler mail server.

Each IMSMO user who accesses the Traveler server must have:

A mail replica on the Traveler server.
A valid internet address, set in the user's person document
A valid internet password, set in the user's person document (only required if you will be using Domino® authentication)
The user's Notes® ID must be in an ID Vault.