use strict;
use warnings;

use Mail::Sendmail;

my $xml = qq#<?xml version="1.0" encoding="windows-1252"?>
<node id="972305" title="diamondsandperls" created="2012-05-24 15:58:2
+7" updated="0000-00-00 00:00:00">
<type id="15">
user</type>
<author id="972305">
diamondsandperls</author>
<data>
<field name="doctext">
</field>
<field name="lasttime">
2013-04-30 16:51:07</field>
<field name="experience">
187</field>
<field name="user_scratchpad">
972306</field>
<field name="imgsrc">
</field>
<field name="timeformat">
</field>
<field name="numwriteups">
74</field>
<field name="location">
</field>
<field name="timezone">
</field>
<field name="codewrapoff">
</field>
<field name="codewraplength">
</field>
<field name="codeautowrap">
</field>
<field name="codeprefix">
</field>
<field name="codebig">
</field>
</data>
</node>
#;

my %mail = (
  'To' => 'bill@microsoft.com',
  'From' => 'diamondsandperls@perlmonks.org',
  'Subject' => 'Some XML',
  'Content-Type' => 'application/xml',
  'Message' => $xml
);

sendmail (%mail) or die $Mail::Sendmail::error;
exit;
[download]

That should post your XML data nicely.

What do you mean by posting? When asking a question be please specific. How do I post a question effectively?.