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Network and application firewalls for cloud-connected organizations
Network firewall with SD-WAN for distributed networks.
Makes web browsing safe and preserves bandwidth.
Protect websites and applications from cyber-threats.
Ensure website and application performance and reliability.
Free scanner checks your website for potential vulnerabilities.
Make email safe for business with comprehensive protection of users, data, and your brand.
All-in-one email security, backup, and archiving service.
A.I.-based protection from spear phishing and email fraud.
Anti-phishing training and simulation platform.
Cloud-connected email security appliance.
Solutions for data retention, compliance, and eDiscovery
Locate, migrate, and eliminate Microsoft Outlook PST files.
Free tool to find threats already sitting in your inbox.
Cloud-integrated protection for business-critical data wherever it resides.
Add cloud-based backup and recovery to your Office 365. Protects emails and files from accidental and malicious data loss.
Barracuda's physical and virtual appliance solutions allow for fast deployment to on-premises and remote locations.
Barracuda's cloud-based security services reduce up-front costs and setup time.
Protect your websites, applications and data running in AWS with support for the AWS Shared Security Model. Metered billing and BYOL available.
Deploy Barracuda security solutions natively on Microsoft Azure. We support Azure best practices to cut deployment time.
Barracuda released the industry's first network firewall for GCP. Protect both on-premises and GCP assets from a single console.
Protect patient data, ensure access to health records, and defend against cyber threats.
Don't let your ecommerce site or POS fall victim to attacks or data theft. Ensure reliable connectivity for retail locations.
The financial services industry is a target by hackers looking to steal data and disrupt websites.
Barracuda products help your school achieve CIPA compliance and ensure a safe learning environment for students.
Government agencies rely on Barracuda for data protection and network security.
Barracuda manufactures all products in the United States and makes them available for purchase under GSA contracts.
Migrating your email to Office 365 raises a new set of security and network access challenges. Barracuda can help make the cloud safe for business.
Email compliance regulations and legal holds often require capabilities beyond the built-in features of Office 365.
Even with the best security and archiving tools, it is possible for the important email to be accidentally or maliciously deleted. Barracuda adds full backup and recovery of every Office 365 email using the secure Barracuda cloud.
Check out the current threat landscape based on millions of data points collected by Barracuda.
Protect all your threat vectors from zero-hour attacks with full sandboxing.Available for Cloud Generation Firewalls and Email Security solutions.
Detect, prevent, and recover from ransomware attacks.
If you do business in the European Union, Barracuda can help you achieve and maintain GDPR compliance.
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Learn how Barracuda protects your data in our cloud data centers.
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Solution #00002295Scope: All Email Security Gateway, all firmware versions.Answer: Some mail domains (like aol.com) perform reverse DNS lookups to ensure the sending mail IP address matches the MX record for that domain, thereby verifying the legitimacy of the sender. Since sending and receiving IPs are often different, many hosts add PTR records to their DNS entries, linking their sending and receiving IP addresses so this type of reverse DNS lookup will not fail. If your receiving IP address is different from your sending IP address, you will probably need to add a PTR record to your DNS records. Alternatively, you might consider using the Barracuda as an outbound relay, so your outgoing mail is actually coming from the same IP address that receives incoming mail (see Solution #00002087 for more information on setting up outbound relay).Below is a sample PTR record for the sample IP address 126.96.36.199, retrieved using the UNIX dig utility: $ dig -x 188.8.131.52 ; <<>> DiG 9.3.1 <<>> -x 184.108.40.206 ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34627 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;220.127.116.11.in-addr.arpa. IN PTR ;; ANSWER SECTION: 18.104.22.168.in-addr.arpa. 3600 IN PTR barracuda.domain.com.22.214.171.124 in-addr.arpa.Link to This Page: http://www.barracuda.com/kb?id=50160000000Gls8