In the past we did have "auto-deny possible hack attempts" turned on and it did prevent users (One large client using Nat) from sending email.
Auto-deny possible hack attempts. If more than 512 characters are sent during anything but the SMTP DATA command, the remote IP address is temporarily put in the "deny access"
How does NAT interact with this feature? Len To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
