In order for mail addressed to a user at your domain to be accepted by the local host, the DNS servers responsible for your network must publish mail routing instructions for other hosts to use. Otherwise, they would not be able to locate a destination system capable of processing and delivering mail for the domain. This is achieved through the use of MX records that are created and published in the DNS servers responsible for your domain (section covers this subject in detail).
Likewise, the local mail server must also be able to read these MX records in order to successfully manage delivery for the domain. Otherwise, the mail server would attempt to deliver the mail to a different host. You must enable the DNS client services on the NetWare server that is hosting the Unoverica Message Transport mail software in order for the mail server to accept and process mail for the domain.
This is achieved through two steps:
NOTE: If you do not have a DNS server for your domain, or you do not have a formally-assigned domain name, then you cannot implement this configuration. You must either contact your Internet Service Provider to obtain a domain name and to establish a DNS server for your domain, or you must use the off-line mail delivery implementation described in section 5.3 Scenario 2: Routing Mail Through an External Site.
STEP: To continue to the next step in the configuration process, go to section 2.4.3 Enable DNS Client Lookups, and then go to section 5.2.1.1 Enable the "Use DNS lookups (OI)" Option.
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