Bug#332520: update-exim4.conf manpage more undocumented variables

[Ross Boylan]

Package: exim4
Version: 4.52-2
Severity: minor

dc_mailname_in_oh='true' appears in my update-exim4.conf.conf file,
but is not documented on the corresponding man page.

The following DEBCONF variables are also undocumented:
  DEBCONFheaders_rewriteDEBCONF
  DEBCONFreturn_pathDEBCONF
These appear in transport/30_exim4-config_remote_smtp_smarthost

Probably because of that, I have the following uncertainties:

What is the relation between dc_hide_mailname and dc_readhost?  Having
set dc_readhost, why is it necessary to set dc_hide_mailname as well?
Do they cover different rewrites?

Also, it looks as if dc_readhost sometimes appears to be the name of
the system, but that /etc/mailname from DEBCONFvisiblenameDEBCONF is
also trying to do this.  What is their relation?

I think there are other undocumented DEBCONF variables (sorry, don't
remember them), and I think this raises the question how much
"internal" stuff needs to go on a man page, vs. comments in the files
at the point of use.  I.e., maybe you're trying to do too much on the
man page.  But some more info somewhere would be helpful.

-- Package-specific info:
Exim version 4.52 #1 built 21-Aug-2005 09:46:54
Copyright (c) University of Cambridge 2005
Berkeley DB: Sleepycat Software: Berkeley DB 4.2.52: (December  3, 2003)
Support for: iconv() IPv6 GnuTLS
Lookups: lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmnz dsearch nis nis0 passwd
Authenticators: cram_md5 plaintext
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile/maildir/mailstore autoreply lmtp pipe smtp
Fixed never_users: 0
Configuration file is /var/lib/exim4/config.autogenerated

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable'), (50, 'unstable'), (40, 'experimental')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.4.27adnvcd
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages exim4 depends on:
ii  exim4-base                    4.52-2     support files for all exim MTA (v4
ii  exim4-daemon-light            4.52-2     lightweight exim MTA (v4) daemon

exim4 recommends no packages.

-- no debconf information