A class of service is a specifically defined configuration of Internet Agent privileges. A class of service controls the following types of access activities:
The default class of service, which all users belong to, allows incoming and outgoing SMTP/MIME messages, and allows POP3 and IMAP4 access. You can control user access, at an individual, distribution list, post office, or domain level, by creating different classes of service and adding the appropriate members to the classes. For example, you could create a class of service that would limit the size of SMTP/MIME messages for a selected individual, distribution list, post office, or domain.
Because you can assign membership at the user, distribution list, post office, and domain level, it is possible that a single user can be a member of multiple classes of service. This conflict is resolved hierarchically, as shown in the following table.
If a user's membership in two classes of service is based upon the same level of membership (for example, both through individual user membership), the class that applies is the one that allows the most privileges.
IMPORTANT: The Internet Agent uses the message size limit set for the default class of service as the maximum incoming message size for your GroupWise system. Therefore, you should set the message size for the default class of service to accommodate the largest message that you want to allow into your GroupWise system. As needed, you can then create other classes of service with smaller message size limits to restrict the size of incoming messages for selected users, distribution lists, post offices, or domain. Methods for restricting message size inside your GroupWise system are described in Restricting the Size of Messages That Users Can Send.