Hello......

I have freeBSD Unix 5.4

I am facing a terrible problem with my sendmail.I have servers having live IPs.And I have sendmail running in my system.
Somebody is sending mail by using my sendmail service.I have checked the IPs and the domains but they are all randoms.In sendmail open relay is closed.I need the sendmail service for my own purpose . But before that I want to stop this random anonymous access of my sendmail service

I want to block all outside connection which can send mails by using my sendmail program.I want only my server side program to send mail.

Could u plzz tell me what to do.
It's very urgent.

Why not just close the port on your system using the BSD firewall? (I'm more of a Linux guy, sorry.)

By default, sendmail only accepts connections from the local machine. The control for this is in your system runtime control file: variable "sendmail_enable" should be set to "NO". (If it's not in /etc/rc.conf it will be in /etc/defaults/rc.conf; /etc/rc.conf overrides the default values.)

This my sound silly but ... how do you know someone is actually abusing your box? Are you blacklisted or are there direct complaints with headers? Or can you confirm by reading logs sendmail is actually accepting and relaying non-authorized senders?