We are using an Trendmicro IMSS 7.0 server to send & receive emails.
Ever since we have upgraded from version 6.0 we experience problems in sending out emails to "SendMail" mailservers. Apparently their is a new feature in these mailservers (Sendmail) that detects Ghost (Spamsending) computers according to the amount of mail that is send from a server and a specific communication speed. Trendmicro's IMSS 7.0 system is automatticaly seen as on of these Ghostmachines.
This means that if someone tries to send to a Sendmail server, this mailserver will reject the connection and after 8 hours, IMSS will generate an "Relay time-out" error message.
Does anyone have any idea in how to resolve this issue?