The mailing list for listmasters using Sympa

[<address@concealed>]

A moderator sent an email message to a list that contains about 7700
subscribers.  The message was successfully delivered to their email boxes. 
However, the moderator, list owner, and sympa listmasters all received the
following error message:

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User <username_removed>@webster.edu has encountered an internal server error
(message diffusion - MSG_ID : <address@concealed> -
LIST : address@concealed) :

  

See logs for more details.
-------------------------------------------------------------------------------
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Has anyone else received this error message?  Does anyone know what might be
causing this?

Thanks,
Matthew Maddox