How to avoid a text body-addressee clash on scrlttr2 letter when multiple addressees are listed?

Question

In trying to use the scrlttr2 package, with a letter address to lots of multiple parties, there is clash/crash between the body of the letter, and those to whom the letter is addressed. In other words the body of the letter, including the subject is printed on top of the last two of the four addresses.

This ends up looking very ugly:

How do I fix this so that I can still use the scrlttr2 letter class to compose my letter?

Help with this would be mucho appreciated.

\documentclass[ 
fontsize=11pt, paper=a4, parskip=half, enlargefirstpage=on, % More space                        on first page 
fromalign=right, % PLacement of name in letter head 
fromphone=on, % Turn on phone number of sender 
fromrule=aftername, % Rule after sender name in letter head 
addrfield=on, % Address field for envelope with window 
backaddress=off, % Sender address in this window 
subject=beforeopening, % Placement of subject 
locfield=narrow, % Additional field for sender 
foldmarks=off, % Print foldmarks
]{scrlttr2} 
\usepackage[T1]{fontenc} 
\usepackage[utf8]{inputenc} 
\usepackage[english]{babel}
\usepackage{bookman} 
\usepackage{lipsum} 
\setkomafont{fromname}{\sffamily } 
\setkomafont{fromaddress}{\sffamily}%% statt \small 
\setkomafont{pagenumber}{\sffamily} 
\setkomafont{subject}{\bfseries} 
\setkomafont{backaddress}{\mdseries} 
\LoadLetterOption{DIN} 
\setkomavar{fromname}{LAW OFFICE OF CHEET M. LIKELY} 
\setkomavar{fromaddress}{10723 Brooke Avenue, Suite 245\\Forest Hills, New York  11375} 
\setkomavar{fromphone}{555.878.6202} 
\setkomavar{fromemail}{[email protected]}         \setkomavar{backaddressseparator}             {\enspace\textperiodcentered\enspace} 
\setkomavar{signature}{Bill U. Lotts,     Esq.} 
\setkomavar{place}{} 
\setkomavar{date}{\today} 
\setkomavar{enclseparator}{: } 

\begin{letter}{HIGHSTUFF BRYNYARD, ESQ.
BYRNYARD LAW OFFICES, PLLC.
4 WEST GATE\\
FURMANVILLE, NY 11735 \vskip.2in JOSEPH M. DSGRIBLE, ESQ.\\
DSGRIBLE DSGRIBLE \& DSGRIBLE\\
555 STUFFIT AVE \\
HARDHEART CITY, NY 11530\\
(555) 222-2800 \vskip.2in  JOSEPH F. PYZKOFF, ESQ.\\
PYZKOFF, PYZKOFF & PYZKOFF\\
500 BYLE COUNTY BLVD. \\
MOSTRUBLE, NY 11735\\
(555) 249-6600 \vskip.2in  JAMES A. POOKA, JR.\\
3320 103RD STREET\\
NUTSO, NY 11361\\
(555) 418-3392}
\setkomavar{subject}{Re:} 
\opening{Dear Sir or Madam:} 
\lipsum[2] 
\closing{Very truly yours,} 
\encl{Papers}
\end{letter} 
\end{document}

Answer 1

With your code I get the warning

address field is 155.80432pt to high

So I would know I have to enlarge both the height of the address field and the space above the refline by 156pt:

\makeatletter
  \@addtoplength{toaddrheight}{156pt}% enlarge the height of the address field
  \@addtoplength{refvpos}{156pt}% shift the refline down
\makeatother 

The so-called pseudolength like toaddrheight are explained in the KOMA-Script documentation.

Code:

\documentclass[ 
fontsize=11pt, paper=a4, parskip=half, enlargefirstpage=on, % More space                        on first page 
fromalign=right, % PLacement of name in letter head 
fromphone=on, % Turn on phone number of sender 
fromrule=aftername, % Rule after sender name in letter head 
addrfield=on, % Address field for envelope with window 
backaddress=off, % Sender address in this window 
subject=beforeopening, % Placement of subject 
locfield=narrow, % Additional field for sender 
foldmarks=off, % Print foldmarks
]{scrlttr2} 
\usepackage[T1]{fontenc} 
\usepackage[utf8]{inputenc} 
\usepackage[english]{babel}
\usepackage{bookman} 
\usepackage{lipsum} 
\setkomafont{fromname}{\sffamily } 
\setkomafont{fromaddress}{\sffamily}%% statt \small 
\setkomafont{pagenumber}{\sffamily} 
\setkomafont{subject}{\bfseries} 
\setkomafont{backaddress}{\mdseries} 
%\LoadLetterOption{DIN}% already loaded by the class
\setkomavar{fromname}{LAW OFFICE OF CHEET M. LIKELY} 
\setkomavar{fromaddress}{10723 Brooke Avenue, Suite 245\\Forest Hills, New York  11375} 
\setkomavar{fromphone}{555.878.6202} 
\setkomavar{fromemail}{[email protected]}         
\setkomavar{backaddressseparator}{\enspace\textperiodcentered\enspace} 
\setkomavar{signature}{Bill U. Lotts,     Esq.} 
\setkomavar{place}{} 
\setkomavar{date}{\today} 
\setkomavar{enclseparator}{: } 
\makeatletter
  \@addtoplength{toaddrheight}{156pt}
  \@addtoplength{refvpos}{156pt}
\makeatother
\begin{document}
\begin{letter}{HIGHSTUFF BRYNYARD, ESQ.
    BYRNYARD LAW OFFICES, PLLC.
    4 WEST GATE\\
    FURMANVILLE, NY 11735\\[.2in]
    JOSEPH M. DSGRIBLE, ESQ.\\
    DSGRIBLE DSGRIBLE \& DSGRIBLE\\
    555 STUFFIT AVE \\
    HARDHEART CITY, NY 11530\\
    (555) 222-2800\\[.2in]
    JOSEPH F. PYZKOFF, ESQ.\\
    PYZKOFF, PYZKOFF \& PYZKOFF\\
    500 BYLE COUNTY BLVD. \\
    MOSTRUBLE, NY 11735\\
    (555) 249-6600\\[.2in]
    JAMES A. POOKA, JR.\\
    3320 103RD STREET\\
    NUTSO, NY 11361\\
    (555) 418-3392}
  \setkomavar{subject}{Re:} 
  \opening{Dear Sir or Madam:} 
  \lipsum[2] 
  \closing{Very truly yours,} 
  \encl{Papers}
\end{letter} 
\end{document}

But I think a letter should have an unique toaddress and so there should be four letters each with one addressee:

Code:

\documentclass[ 
fontsize=11pt, paper=a4, parskip=half, enlargefirstpage=on, % More space                        on first page 
fromalign=right, % PLacement of name in letter head 
fromphone=on, % Turn on phone number of sender 
fromrule=aftername, % Rule after sender name in letter head 
addrfield=on, % Address field for envelope with window 
backaddress=off, % Sender address in this window 
subject=beforeopening, % Placement of subject 
locfield=narrow, % Additional field for sender 
foldmarks=off, % Print foldmarks
]{scrlttr2} 
\usepackage[T1]{fontenc} 
\usepackage[utf8]{inputenc} 
\usepackage[english]{babel}
\usepackage{bookman} 
\usepackage{lipsum} 
\setkomafont{fromname}{\sffamily } 
\setkomafont{fromaddress}{\sffamily}%% statt \small 
\setkomafont{pagenumber}{\sffamily} 
\setkomafont{subject}{\bfseries} 
\setkomafont{backaddress}{\mdseries} 

\setkomavar{fromname}{LAW OFFICE OF CHEET M. LIKELY} 
\setkomavar{fromaddress}{10723 Brooke Avenue, Suite 245\\Forest Hills, New York  11375} 
\setkomavar{fromphone}{555.878.6202} 
\setkomavar{fromemail}{[email protected]}
\setkomavar{backaddressseparator}{\enspace\textperiodcentered\enspace} 
\setkomavar{signature}{Bill U. Lotts,     Esq.} 
\setkomavar{place}{} 
\setkomavar{date}{\today} 
\setkomavar{enclseparator}{: } 

\begin{document}
\newcommand{\myletter}[1]{%
  \begin{letter}{#1}
    \setkomavar{subject}{Re:}
    \opening{Dear Sir or Madam:} 
    \lipsum[2] 
    \closing{Very truly yours,} 
    \encl{Papers}
    \cc{Recipient 1\\Recipient 2\\Recipient 3\\Recipient 4}
  \end{letter}
}

\myletter{HIGHSTUFF BRYNYARD, ESQ.
    BYRNYARD LAW OFFICES, PLLC.
    4 WEST GATE\\
    FURMANVILLE, NY 11735}
\myletter{
    JOSEPH M. DSGRIBLE, ESQ.\\
    DSGRIBLE DSGRIBLE \& DSGRIBLE\\
    555 STUFFIT AVE \\
    HARDHEART CITY, NY 11530\\
    (555) 222-2800}
\myletter{
    JOSEPH F. PYZKOFF, ESQ.\\
    PYZKOFF, PYZKOFF \& PYZKOFF\\
    500 BYLE COUNTY BLVD. \\
    MOSTRUBLE, NY 11735\\
    (555) 249-6600}
\myletter{
    JAMES A. POOKA, JR.\\
    3320 103RD STREET\\
    NUTSO, NY 11361\\
    (555) 418-3392}
\end{document}