<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <!--Converted with LaTeX2HTML 96.1-c (Feb 29, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --> <HTML> <HEAD> <TITLE>So Which Entries are Really Required?</TITLE> </HEAD> <BODY LANG="EN"> <A HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="contents_motif.gif"></A> <BR> <B> Next:</B> <A HREF="node234.html">A Tour of Sendmail+IDA </A> <B>Up:</B> <A HREF="node223.html">Typically Used sendmail.m4 Parameters</A> <B> Previous:</B> <A HREF="node232.html">The Master Sendmail.mc File</A> <BR> <P> <H3><A NAME="SECTION00173210000">So Which Entries are Really Required?</A></H3> <P> <A NAME="8415"></A> <P> When not using any of the optional dbm tables, sendmail+IDA delivers mail via the DEFAULT_MAILER (and possibly RELAY_HOST and RELAY_MAILER) defined in the sendmail.m4 file used to generate sendmail.cf. It is easily possible to override this behavior through entries in the domaintable or uucpxtable. <P> <A NAME="8416"></A> <A NAME="8417"></A> A generic site that is on Internet and speaks Domain Name Service, or one that is UUCP-only and forwards all mail via UUCP through a smart RELAY_HOST, probably does not need any specific table entries at all. <P> Virtually all systems should set the DEFAULT_HOST and PSEUDONYMS macros, which define the canonical site name and aliases it is known by, and DEFAULT_MAILER. If all you have is a relay host and relay mailer, you don't need to set these defaults since it works automagically. <P> UUCP hosts will probably also need to set UUCPNAME to their official UUCP name. They will also probably set RELAY_MAILER, and RELAY_HOST which enable smart-host routing through a mail relay. The mail transport to be used is defined in RELAY_MAILER and should usually be UUCP-A for UUCP sites. <P> If your site is SMTP-only and talks `Domain Name Service', you would change the DEFAULT_MAILER to TCP-A and probably delete the RELAY_MAILER and RELAY_HOST lines. <P> <A NAME="8418"></A> <P> <BR> <HR> <P><ADDRESS> <I>Andrew Anderson <BR> Thu Mar 7 23:22:06 EST 1996</I> </ADDRESS> </BODY> </HTML>