Sender Authentication features like DMARC, DKIM and SPF blocks are easy to setup and offer realtime protection and stops many unwanted emails. I can easily add exemptions to domains if necessary. Also the quarantine digest emails from Barracuda are a saviour for administrators time and resources to release emails as users can do this themselves. Review collected by and hosted on G2.com.
Users by default cannot release bulk messages that have not been delivered to their inbox when they access their quarantine disgest message from Barracuda. I spend much time releasing these bulk emails and I think if Barracuda can allow the user to manually release these, with perhaps a warning of the potential risks involved, would save administrators time. Review collected by and hosted on G2.com.