IKARUS mail.security
Release notes
Release date 14. January 2025
Greylisting is an effective method for filtering spam emails, where emails from unknown senders are temporarily rejected. Unlike spam bots, legitimate mail servers typically retry sending the email after a short delay, at which point it is accepted.
To ensure that legitimate mail servers that do not perform retry attempts are not blocked, you can now define specific exceptions in the settings of IKARUS mail.security.
Greylisting exceptions can be added based on domain, IP address, or sender address in the following format:
domain.com / 127.0.0.1 / senderaddress@domain.com
