When viewing the application events on our Exchange 5.5 server l noticed we have many successful connections with the following description.
Category: SMTP Interface Events
Event ID: 2003
A new TCP/IP SMTP connection has been made to host 10.5.80.105 (for beefymailer.net). Logfile: L0000001.LOG
Our domain name is not beefymailer.net. Our exchange server is suppose to only forward and receive email from our sendmail gateway at the IP shown.
What does the event indicate? and what does it mean?