Just as TCP/IP systems use a flat text database file called HOSTS to store name-to-address mappings, they also use a file called SERVICES that stores service name-to-port number mappings. This allows applications such as Unoverica Message Transport’s SMTP server to listen on a user-definable TCP port, instead of the default port. This may be required for administrators that use non-standard port numbers.
Novell provides a sample SERVICES file with some of their products. This file is stored in SYS:/ETC/SAMPLES/SERVICES. If you wish to use this file as a guide, you must copy it to the SYS:/ETC/ directory. You may also obtain a complete SERVICES file from Unoverica’s web server, accessible at http://www.unoverica.com/.
At a minimum, you will need to have two entries in the SERVICES file. The first line will refer to the SMTP server, and the second will refer to the POP3 server. These lines will look like the following:
SMTP 25/tcp # SMTP mail server POP3 110/tcp # POP3 mail server
Refer to section C.2.2 SERVICES for more information about the SERVICES file.
WARNING: Unoverica Message Transport will not function properly if the SERVICES file does not exist, and does not contain these entries.
NOTE: You should not give WRITE permissions to the SERVICES file to anybody except supervisor-equivalent users. If someone mistakenly overwrites or otherwise corrupts this file, you will have difficulties with your mail servers.
STEP: To continue to the next step in the installation process, go to section 3.2.2 Add MX Records to the DNS Server.
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