How can Exim be configured to prevent spam?

Exim is an open-source email server software that is widely used for its flexibility and reliability. To prevent spam, Exim can be configured in several ways. One common technique is to enable greylisting, which involves temporarily rejecting emails from unknown senders and requesting them to resend the message. Exim can also be configured to use DNSBL services that block emails from known spam sources or to use SPF and DKIM to authenticate legitimate senders. Additionally, Exim can be configured to set message limits to prevent excessive email volumes and prevent unauthorized access using authentication mechanisms. Regular monitoring and updating of Exim and its anti-spam configurations are essential to ensuring that it remains effective in preventing spam.

This mind map was published on 17 May 2023 and has been viewed 64 times.