The Cisco Email Security Appliance is being used as the primary email gateway for our datacenter. We use the Cisco Email Security Appliance to receive, send, scan, and filter our incoming and outgoing email.
We use the Talos Threat intelligence to filter out known 'bad' email sender. The Sophos Antivirus plugin for antivirus scanning and the DKIM signing for our outgoing mails.
The system enables end users to manage their own whitelists/blacklists and provides our service desk with the means to troubleshoot email delivery issues with ease.
On-box DKIM and DMARC features let us secure our email flows and reduce the risk of our domains being used for spamming.
Administration of the email domains and custom filters are easily done via the web interface.
The user interface could be updated. Better dashboards and more interactive overviews would be nice, but the current functionality is sufficient.
Three to five years.
The Cisco Email Security Appliance has enabled us to reduce spam by at least 30% compared to our previous solution.
FortiMail advantages:
no per user mailbox pricing;
three modes of deployment (Server mode--fully featured e-mail server & e-mail protection, Gateway mode-- e-mail protection and Transparent mode--No changes required to existing MX records and MUA/MTA configurations );
not need for third party antivirus licensing
higher spam detection percentage based tests and certifications by Global Third-Party Certification Authorities