Fail to patch qmail-1.03-20060201.patch with qmail-ldap patch and qmail-1.03-jms1.6c5.patch

["sato x" <gladiol4@gmail.com>]

Dear guys,
I've patched a clean qmail-1.03 source code with
qmail-ldap-1.03-20060201.patch in Fedore Core 3 and it succeed. 
But later I failed to patch it again with qmail-1.03-jms1.6c5.patch (or
even just the ext_todo-20030105.patch) from www.jms1.net. What come
into my question are:
- is it possible to patch qmail-1.03 that way? (patching a
qmail-ldap-patched qmail-1.03 source code with the big combined patch
from jms1.net or vice-versa - patching it with jms1.net patch before
qmail-ldap-1.03-20060201 patch)
- does qmail-ldap-1.03-20060201 include all (or maybe just some ) patches from jms1.net?
- is it safe to run a qmail-ldap server without patching it with ext_todo-20030105.patch on a busy mail server?

Below is a sort of the message:

qmail-1.03># patch < ../qmail-1.03-jms1.6c5.patch
  The next patch would create the file EXTTODO, which already exists!
  Assume -R? [n] n
  Apply anyway? [n] y
  Patch attempted to create file EXTTODO, which already exists.
  Hunk #1 FAILED at 1
  ...
  14 out of 28 hunks FAILED -- saving rejects to file Makefile.rej
  ... # etc ...

If anyone ever resolved it before, please share some information with
me (us). Thank you in advance for your kindness and sorry for the
language. 

Best regards,

sato