Okay, upon reflection I think I figured out what happened here.  I replied to an existing thread but deleted the entirety of the message thread and changed the subject entirely.  I thought that started a new message thread but perhaps the list software registers that as a reply to an existing thread.  I organize my email client by date and not by thread so I would not see this.  Apologizes to all if this is the case.

I'm told by my list subscriber the following:

a. He thinks that the Digest message formatting is messed-up as it
originally comes from the list, but he is not sure (reply messages
might be messing up the formatting).

b. He is using iPhone and Outlook for Apple email clients.

c. He is also experiencing quote marks (") and apostrophes (') being
turned into question marks (?) throughout the text of digest
messages.

Is this mess a function of his Apple email clients, or a problem
that rests with the Mailman list management software?

Thanks,
Michael


  
    Michael Reeder, LCPC 
        
  Hygeia Counseling Services : Baltimore / Mt.
          Washington Village location
   410-205-2419
          / michael(at)hygeiacounseling.com
   http://www.hygeiacounseling.com
          - main website. 
        
  
  On 11/17/2020 9:21 PM, Michael Reeder LCPC -- Hygeia Regular
  wrote:

Mark
  -- I very much appreciate your answer below.  I'll work on the
  (nearly impossible) task of training users to respond to digests
  properly and also explain to people that the Mailman list mgmt
  software can't control formatting screw-ups by email client
  programs. 
  
  I agree with not hijacking threads...  What hijack?  Looks to me
  like I started a new topic.  Right?? 
  
  Thanks, 
  Michael Reeder 
  michael@hygeiacounseling.com 
  
  
  On 11/17/2020 2:32 PM, Mark Sapiro wrote: 
  On 11/16/20 10:36 PM, Michael Reeder LCPC
    -- Hygeia Regular wrote:
    
    Hello All,
      
    
    
    Please don't hijack threads. When you want to post a new topic,
    don't do
    
    it by replying to another post, just compose a ney message to
    the list.
    
    
    
    I am running a listserv which was
      recently moved to GNU Mailman 2.1.23
      
      on a Dream Host server (I assume UNIX).  I am encountering the
      following
      
      problem:
      
    
    
    Please see
    <https://wiki.list.org/DOC/Mailman%20is%20not%20Listserv>.
    
    
    
    Replies to Digest messages (both MIME
      and plain text) sometimes have
      
      line breaks stripped from them.  We have seen this so far with
      both a
      
      version of Microsoft Outlook and an email client program for
      an Android
      
      phone.  As far as I know, the digest messages themselves
      originally all
      
      look fine when sent from the listserv.
      
      
      Anyone know if there is anything I can do about this?
      
    
    
    Use a different mail client that doesn't do this. Otherwse,
    there's
    
    nothing you can do to control what users mail clients do.
    
    
    
    Bonus Question:  I do not have command
      prompt access -- only admin panel
      
      access (listserv software is implemented through Dream Host).
      Anything I
      
      can do from the admin panel?  What would I ask Dream Host to
      change?
      
    
    
    There is no change to the digests themselves that would mitigate
    this
    
    issue without breaking the way the original digests render.
    
    
    Further, people shouldn't be replying to a digest. For a MIME
    format
    
    digest, they should open the individual message and reply to
    that. For
    
    the plain digest, they should just copy/paste relevant context
    from the
    
    digest into a new post to the list. Of course, training list
    members to
    
    do that is probably not possible ...