Documentation patch for bug 240060: document minimum sendmail version that is…

docs/en/xml/installation.xml

 <!-- <!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"> -->
-<!-- $Id: installation.xml,v 1.80 2008/04/04 06:47:10 jocuri%softhome.net Exp $ -->
+<!-- $Id: installation.xml,v 1.81 2008/04/04 06:47:11 jocuri%softhome.net Exp $ -->
 <chapter id="installing-bugzilla">
   <title>Installing Bugzilla</title>
 
@@ -76,7 +76,9 @@
         </para>
       </step>
       <step>
-        <para><link linkend="install-MTA">Install a Mail Transfer Agent</link>
+        <para>
+          <link linkend="install-MTA">Install a Mail Transfer Agent</link>
+          (Sendmail 8.7 or above, or an MTA that is Sendmail-compatible with at least this version)
         </para>
       </step>
       <step>
@@ -494,6 +496,11 @@
       replace Sendmail with Postfix or Exim. They are drop-in replacements, so that Bugzilla
       will not distinguish between them.</para>
 
+      <para>
+        If you are using Sendmail, version 8.7 or higher is required.
+        If you are using a Sendmail-compatible MTA, it must be congruent with at least version 8.7 of Sendmail.
+      </para>
+
       <para>Consult the manual for the specific MTA you choose for detailed installation
       instructions. Each of these programs will have their own configuration files where you must
       configure certain parameters to ensure that the mail is delivered properly. They