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<h3>Common Problems FAQ</h3>
<b>Problem:</b> All Mailman web pages give a <em>404 File not
found</em> error.
<br><b>Solution:</b> Your web server has not been set up properly
for handling Mailman's cgi commands. Make sure you've:
<ol><li>Configured the web server to give permissions to
<code>$prefix/cgi-bin</code>
<li>Restarted the web server properly.
</ol>
Consult your web server's documentation for instructions
on how to do these things.
<p><b>Problem:</b> All Mailman web pages give an <em>Internal
Server Error</em>.
<br><b>Solution:</b> The likely problem is that you are using the
wrong GID or UID for CGI scripts. Check your syslog. If you
see, for example, a line like:
<blockquote>
<pre>
Attempt to exec script with invalid gid 51, expected 99
</pre>
</blockquote>
You need to reinstall Mailman, and specify
<code>$CGI_GID</code> to be 51, as described in the
installation instructions.
<p><b>Problem:</b> I send mail to the list, and get back mail saying the
list is not found!
<br><b>Solution:</b> You probably didn't add the necessary aliases
to the system alias database, given to you when you ran the
<code>newlist</code> command. If you did add them, you likely
did not update the alias database, or your system requires you
to run <code>newaliases</code> explicitly. Refer to section 5
above for more information.
<p><b>Problem:</b> I send mail to the list, and get back mail saying,
<em>unknown mailer error</em>.
<br><b>Solution:</b> The likely problem is that you are using the
wrong GID or UID for mail. Check your syslog. If you see, for
example, a line like:
<blockquote>
<pre>
Attempt to exec script with invalid gid 51, expected 99
</pre>
</blockquote>
You need to reinstall Mailman, and specify
<code>$MAIL_GID</code> to be 51, as described in the
installation instructions. see notes on Postfix below, as by
default it will create these problems on installation.
<p><b>Problem:</b> I use Postfix for my MTA and the mail wrapper programs
are logging complaints about the wrong GID.
<br><b>Solution:</b> Create a separate aliases file for Postfix in its
<code>main.cf</code> config file under the variable
<em>alias_maps</em>. Put the file somewhere in Mailman's home
directory, or somewhere else where the user
<code>mailman</code> has write access to it; <em>as user
mailman</em> call Postfix's <code>postalias</code> on the
alias file.
<blockquote>
<pre>
% postalias the-alias-file
</pre>
</blockquote>
Also as user mailman, run
<blockquote>
<pre>
% python -c'import os; print os.getgid()'
</pre>
</blockquote>
<p>This should print out the group id that Mailman should be
configured to expect when the mail wrapper programs are run.
Call it <em>thegid</em>. Rebuild Mailman with
<blockquote>
<pre>
% ./configure --with-mail-gid=thegid
</pre>
</blockquote>
<p><b>Problem:</b> I send mail to the list, and get back mail saying,
<em>sh: wrapper not available for sendmail programs</em>
<br><b>Solution:</b> Your system uses sendmail restricted shell
(smrsh). You need to configure smrsh by creating a symbolic
link from the mail wrapper (<code>$prefix/mail/wrapper</code>)
to the directory identifying executables allowed to run under
smrsh.
<p>Some common names for this directory are
<code>/var/admin/sm.bin</code>, <code>/usr/admin/sm.bin</code>
or <code>/etc/smrsh</code>.
<p>Note that on Debian Linux, the system makes
<code>/usr/lib/sm.bin</code>, which is wrong, you will need to
create the directory <code>/usr/admin/sm.bin</code> and add
the link there. Note further that any aliases
<code>newaliases</code> spits out will need to be adjusted to
point to the secure link to the wrapper.
<p><b>Problem:</b> I messed up when I called configure. How do I clean
things up and re-install?
<br><b>Solution:</b>
<blockquote>
<pre>
% make clean
% ./configure --with-the-right-options
% make install
</pre>
</blockquote>
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