[issue2551014] Broken pipe when sending mails (entries in nosy list)

New submission from Paul Spooren:

The interface works fine except when sending emails by putting entries
to the nosy list. The interface loads until it times out, no matter what
timeout I set in the proxy.

Receiving emails via mailgw works just fine.

The error message looks like that:

127.0.0.1 - - [26/Nov/2018 11:18:18] "POST /support/issue4 HTTP/1.0" 500 -
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 46082)
Traceback (most recent call last):
  File "/usr/lib/python2.7/SocketServer.py", line 571, in process_request
    self.finish_request(request, client_address)
  File "/usr/lib/python2.7/SocketServer.py", line 331, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python2.7/SocketServer.py", line 654, in __init__
    self.finish()
  File
"/usr/local/lib/python2.7/dist-packages/roundup/scripts/roundup_server.py",
line 683, in finish
    RoundupRequestHandler.finish(self)
  File "/usr/lib/python2.7/SocketServer.py", line 713, in finish
    self.wfile.close()
  File "/usr/lib/python2.7/socket.py", line 283, in close
    self.flush()
  File "/usr/lib/python2.7/socket.py", line 307, in flush
    self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
----------------------------------------

----------
messages: 6299
nosy: aparcar
severity: major
status: new
title: Broken pipe when sending mails (entries in nosy list)
type: crash
versions: 1.6

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