One of my customers is sending about 8k emails daily from a joomla script, exim logs show that it is sent in this way:

Code:
2009-04-09 12:08:53 cwd=/home/site/public_html 6 args: /usr/sbin/sendmail -t -i -oi -f editor@site.com
2009-04-09 12:38:47 cwd=/home/site/public_html 6 args: /usr/sbin/sendmail -t -i -oi -f editor@site.com
Looking at cPanel - Bandwidth shows no traffic at SMTP (the way joomla send mails using phpmailer), only HTTP traffic. What do you think?

Thanks.