HI I have more or less the same issue. I try to send a monitoring mail via root, and if I do a tcpdump I see:
pass out on em2: public_ip.17782 > 127.0.0.1.25: What means, the firewall try to send a mail to outside. I try the same thing with the command: mail [EMAIL PROTECTED] subject: toto . And I see exactly the same result. What is wrong ? Regards