E-mail did not send to recipients

RT Users
1

e-mail was processed by RT. /var/log/messages states that it sent it
to specified recipients. under history in web view, it shows that it
sent to the specified recipients. but no e-mail were ever sent! this
is the only that did not get sent. other e-mails before and after this
message were sent.

it looks like it was sent using Vista and Office 11. Are there issues
with RT and VISTA/OFFICE11? we do not want to lose mail (by not being
able to see it from our inbox).

here is the html content of the e-mail (extracted from RT)

TEXT WAS HERE

 

TEXT WAS HERE 

 

TEXT WAS HERE

 

 

 

TEXT WAS HERE

TEXT WAS HERE

 

SYSTEM DETAILS:

CentOS release 4.5
RT 3.6.3

FastCgiIpcDir /var/cache/rt3

ServerAdmin noc@domain.com.net ServerName rt.domain.com.net TransferLog /var/log/httpd/access_log ErrorLog /var/log/httpd/error_log DocumentRoot /opt/rt3/share/html 
    SSLEngine on
    SSLCertificateFile /etc/httpd/conf/ssl/rt.domain.com.net.crt
    SSLCertificateKeyFile /etc/httpd/conf/ssl/rt.domain.com.net.key
    SSLCACertificateFile /etc/httpd/conf/ssl/sf_issuing.crt

    AddDefaultCharset UTF-8
    AddHandler fastcgi-script .fcgi

    <Directory /opt/rt3/share/html>
            Options FollowSymLinks ExecCGI
            AllowOverride None
    </Directory>

    Alias /NoAuth/images /opt/rt3/share/html/NoAuth/images
    ScriptAlias / /opt/rt3/bin/mason_handler.fcgi/