The service provides a front end to your organisation's mail server, so it's not exposed to direct connections from compromised third party mail servers.
It offers additional security by identifying the source of a message, indicating whether it is listed in selected DNS blocklists and adding a tag to indicate possible spam, helping to protect your end users against unwanted email.
Identifies emails flagged by blacklists and marks as spam
Prevents your mailservers from relaying spam
Offline queueing service for incoming mail - once online, stored queues will be gradually released
On request the relays of the mailer shield service will add additional lines to the header of each message, which may indicate that the message is spam or otherwise constitutes email abuse
Provides resilience with three servers that automatically take over from one another if a server fails
Supports IPv4 and IPv6
Echo service which accepts a message from any Janet IP address and responds with a message to the apparent originating email address (useful for service monitoring, checking regularly that messages are entering and leaving your network, or the message headers are as you expected)
Reduces the risk of your reputational damage
Available, at no additional cost, to customers connected to the Janet network.