My sincere thanks for the reply.

Viktor Dukhovni <postfix-us...@dukhovni.org> wrote ..

>     - As much as possible ask one question at a time.

   Yeah, my general philosophy is to break large problems down to component 
parts and fix those one-at-a-time; that generally makes the large problem 
eventually disappear.

>       and (avoiding HTML formatting) post "postconf -nf" and "postconf
>       -Mf" output (the latter if master.cf is pertinent).

   One question; this will absolutely expose real domains, machine names, and 
such. I wouldn't normally do that on a web forum, and might on a mailing list, 
except for all of the web archives this list feeds. Is there *any* future 
downside to exposing that real-world information? Or is this common practice 
here and I am being paranoid?

>         http://www.postfix.org/BASIC_CONFIGURATION_README.html
>         http://www.postfix.org/STANDARD_CONFIGURATION_README.html

   I had skimmed these, and know I need to scan them properly (on the list for 
tomorrow morning), but they tend to make the assumption that one is setting up 
a fresh new mail server. I am migrating an old production machine with many 
domains and rather large external files (virtusertable, access, etc.) 
controlling various mailing list servers and other mail requirements that all 
need to move to the new postfix install before I can switch the MX records to 
it. I would have thought there would be many web pages dealing with the 
migration from sendmail to postfix, but I basically found ONE so far ( 
http://www.nmmm.nu/postfix.htm ) that details using various pre-existing 
sendmail config files in postfix, and I suspect that one is out-of-date enough 
to be causing (or at least not solving) my first "simple" problem.

   If I missed anywhere on the web where moving from sendmail to postfix while 
using (or modifying) existing external files is discussed in detail, pointers 
would be appreciated - might save me from making a bunch of embarrassing newbie 
posts here...

         Charlie

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