Outbound mail is rate controlled based on the IP address by the Barracuda Email Security Gateway as described in Rate Control Inbound. Rate Control for outbound email, however, can also be applied based on sender email address. If the number of recipients from a sender email address exceeds the specified Maximum Recipients per Sender over a 30 minute time period, the Barracuda Email Security Gateway will defer (rate control) any further connection attempts from that particular sender until the next time frame. Deferred outbound messages will be logged as "Rate Controlled" in the Message Log.
To send large amounts of mail from a specific email address:
- Go to the BLOCK/ACCEPT > Rate Control page.
- Enter the IP address to exempt in the Rate Control Exemption IP/Range section of the page.
- Next, enter the sending email address in the Email Addresses text box in the Rate Control Exemption Sender Email Address (Outbound Only) section of the page.
Note that adding a trusted IP address to the Allow List on the BLOCK/ACCEPT > IP Filters page under Allowed IP/Range also exempts that IP address from Rate Control.