The preferred way to connect to non-GroupWise messaging systems is through the Internet.
GroupWise® provides connectivity to the Internet through the GroupWise Internet Agent. The Internet Agent uses standard Internet protocols and formats. This means that messages can be sent to or received from any Internet-connected e-mail system that can handle MIME or RFC-822 formatted messages sent using the SMTP protocol.
The Internet Agent also supports POP3 and IMAP4, which means that POP3/IMAP4 clients can be used to access GroupWise mailboxes. In addition, the Internet Agent supports LDAP, which means that it can act as an LDAP server by providing LDAP queries of the GroupWise directory.