The following information is intended to provide the administrator with specific information about how to configure sendmail on z/OS®. Before you use this information, become familiar with the industry-accepted publication for sendmail, sendmail by O'Reilly & Associates, Inc. (ISBN 1-56592-839-3). That publication is known throughout the industry as the bat book, and this information consistently refers to the bat book for further information.
The bat book supports sendmail version 8.12. For new features supported in sendmail 8.12.1, this information refers to documents that come from sendmail resources. The most noteworthy document is Sendmail Installation and Operation Guide. You can find this document on the web, http://www.sendmail.org/~ca/email/doc8.12/op.html, and it is also shipped in /usr/lpp/tcpip/samples/sendmail/sendmail.ps.
Sendmail 8.12.1 has been developed with two main topics in mind, enhanced security mail filters and IPv6 support. Associated topics like Transport Layer Security (TLS), mail filters (Milter) and IPv6 are explained.
If sendmail is to be used in a multilevel secure environment, for more details concerning sendmail configuration and setup, see z/OS UNIX sendmail.
Additional information about sendmail can also be found in documents from the sample directory that were received during the port of sendmail 8.12.1 from the http://www.sendmail.org website. The Sendmail Installation and Operation Guide document (/usr/lpp/tcpip/samples/sendmail/sendmail.ps), for instance, is the generic guide from http://www.sendmail.org, which might be helpful as a more thorough guide in a slightly different format. The README.m4 document gives more details for building a configuration file using the m4 preprocessor.
Information is also provided on how to configure popper on the z/OS platform. The popper function requires very little configuration. For more information on the protocol used by this UNIX application, see RFC 1939.