A work around would be to have the first address in the list be one you don't mind showing up in the headers.
As for what is causing this problem... I'm sorry but I don't know.
I usually do something like:
open(MAIL, "|/usr/lib/sendmail -oi -t") || die "Can't open sendmail: $
print MAIL <<MESSAGE;
Bcc: $bcc1, $bcc2
This is an automagically generated message, please do NOT reply to it.
print MAIL "More text goes here";
EDIT: you could use a foreach loop to add enough Bcc: addresses.
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link or
or How to display code and escape characters
are good places to start.