Monks,

I am sending some data from a signup form to an e-mail address using this code -- which some other fellow Monks were nice enough to lend me a while back. 
open (MAIL,"|sendmail -t") || die "Unable to open sendmail";
print MAIL "To: $recipient\n";
print MAIL "From: $from_email\n";
print MAIL "Reply-to: $reply_email\n";
print MAIL "Subject: $subject\n\n";
print MAIL "$body";
close (MAIL) || die "Unable to send e-mail";

[download]
It works great, but when I turn on Taint Mode by adding -T to the #!/usr/bin/perl line, I get the following error message: 
Insecure $ENV{PATH} while running with -T switch at submit.cgi line 13
+7.

[download]
Line 137 if, of course, this one: 
open (MAIL,"|sendmail -t") || die "Unable to open sendmail";

[download]
So my question is.... what is the proper way of securing this operation so that Taint Mode is happy (as well it deserves to be)?

Thanks for your input, as always!

In reply to Taint Mode Doesn't Like SENDMAIL Pipe by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.