Barracuda Email Security Service IP Ranges
220.127.116.11/27 18.104.22.168/26 22.214.171.124/27 126.96.36.199/27 188.8.131.52/26 184.108.40.206/27 220.127.116.11/20 18.104.22.168/21 22.214.171.124/20 126.96.36.199/21 Follow these tips to ensure connectivity and redundancy:
Customers Using the Following Instances of the Barracuda Email Security Service Instance
Network Traffic to ESS (SMTP)
Network Traffic from ESS (SMTP and other)
United Kingdom (UK)
United States (US)
Ensure Connectivity and Redundancy
Follow these tips to ensure connectivity and redundancy:
How to Add the IP Ranges to Office 365
Use the following steps to add the Barracuda IP ranges to your receive connector in Microsoft Office 365: Click the + symbol, and in the add allowed IP address field, enter the first IP range to allow. Click OK.
Use the following steps to add the Barracuda IP ranges to your receive connector in Microsoft Office 365:
Click the + symbol, and in the add allowed IP address field, enter the first IP range to allow.
Staying in Compliance
The Subscription section in the Overview > Dashboard displays the active users on your account and the total number of user licenses on your account:
- Purchased – Represents the number of user licenses on your account.
- Active – Represents the total number of users on your account that the mail server recognizes in the Barracuda Email Security Service in a 30-day period.
Option 1. Purchase Additional User Licenses
Contact Barracuda Networks customer service to purchase additional user licenses.
Option 2. Update Automatically Add Users Setting
When Automatically Add Users is set to Yes on the Domains > Domain Settings page, the service automatically creates an account for a user not currently in the User List when the Barracuda Email Security Service receives mail for two days within a seven day period from that user.
- To avoid invalid user creation, enable recipient verification on your mail server. If you do not enable recipient verification on your mail server and set Automatically Add Users to Yes, the system might create more user accounts than are needed.
- You can change this value to No.
Option 3. Remove Recipients from the User List
You can remove users that were manually added (not LDAP) on the Users > Users List page.
- Enter all or part of a user name or email address, and click Search.
- Click Delete in the Actions field, and click OK in the Confirmation dialog box.
- Complete these steps for each user you want to remove.
Option 4. LDAP Accounts
If you automatically create user accounts for all users in a domain based on your LDAP directory but not all of those users need a user license, you can disable directory services on the domain and manually add only those users that need access through the Users > Users List page, or adjust the user list via LDAP or Active Directory on your mail server.
Manage Support and Partner Access
Manage Barracuda Support and partner access to messages from the Support tab in the Barracuda Email Security Service.
Barracuda support access is enabled by default. To disable access, click Disable Support Access. Note that you must enable Support Access to allow Barracuda Support to investigate message content.
Partner Access to Messages
Partner access to messages is enabled by default. To disable access, click Disable Message Body Access. When disabled, partners can continue to manage your accounts but cannot view the content (message body) of emails for these accounts.