SMTP Error: Could not connect to SMTP Host

From the machine that Vembu-VMBackup is installed, I can telnet to local exchange server and successfully sent an email with no authentication.

Putting the same settings in Vembu email notification and the message is SMTP Error: Could not connect to SMTP Host.

Tried adding Auth with no luck.

Checked netstat and can't see Vembu server opening a connection, the firewall is disabled.

Any suggestions appreciated.

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