The world is still evolving rules for dealing with matters such as citation
and acknowledgment of authorship in email.  Generally it seems to be that
the same respect for intellectual property that should be shown for
traditional material should be shown for email postings.  Permission to
reprint should be requested, although brief passages for purposes of
criticism or illustration are probably o.k. under the doctrine that
United States copyright terms "fair use."  Under United States copyright
law intellectual creations are "born with copyright," that is, the common
law copyright of ownership of intellectual product was codified in the
1978 (ca.) United States copyright law.
 
Whether to name source or not is a matter of original author's permission.
Different people under different circumstances will give varied answers.
 
The thrust of the above comments are that it is accepted "netiquette"
to request permission to re-transmit a private message while the rules
about broadcast dissemination (as this message) are murkier.  Ordinarily
a posting to one list that might be of interest to another are re-posted;
often with an indication that the re-posting is with the permission of the
original author.
 
Since communicating on email is so easy, requesting permission to reprint
should not impose any particular burden.  Just send a message to the
source, request permission, and likely it will be granted.  But I personally
would not assume this.  I always request permission even when it is clear
that it will be granted.
 
Cal Pryluck, Radio-Television-Film, Temple University, Philadelphia
<[log in to unmask]>  <PRYLUCK@TEMPLEVM>