We have a Lotus Notes Domino R5 Server which is loaded on Win-2k Server. We also have Mdaemon Mail Server installed on the same server. We fetch our mails thru MDaemon and then it delivers it to Lotus Domino. We have a valid IP.
The problem we are facing is that our ISP told us that our SMTP PORT # 20 is open and somebody is using this port for sending junk mails. Everyday we are receiving more than 15000 mails. Our server is working as a relay for receiving and transferring these mails.
Pls. suggest me how do i put authentication on our SMTP PORT # 25 in Lotus Domino Server R5.
Thanks & Regards,