A remote vulnerability has been discovered in the EXIM email server that allows an attacker to run commands as root.
https://www.zdnet.com/article/new-rce-vulnerability-impacts-nearly-half-of-the-internets-email-servers/
If your mail server is running EXIM our email gateway can offer you complete protection from this exploit and can keep your users safe. The service is cloud-deployed and fully managed and can scale from a single domain to hosting providers needing filtering for tens of thousands of domains.