is it SMG security issue?
we use SMG 9.5.4. What I found, i tried to connect from any computer in local vlan and send email to local exchange server using telnet:
220 mail.ourdomain.local ESMTP Symantec Messaging Gateway
250 mail.ourdomain.local says HELO to 192.168.1.24:59181
mail from: firstname.lastname@example.org
250 MAIL FROM accepted
rcpt to: email@example.com
250 RCPT TO accepted
354 continue. finished with "\r\n.\r\n"
250 OK 6E/1E-19702-2FA85EF4
221 mail.ourdomain.local closing connection
Is this an security issue? Can this be used to send unauthorised emails to outside or inside mail server or recipients?